Free Essay

Displacement Reactions

In:

Submitted By myrjunangeles
Words 1034
Pages 5
Group Members: Ariana, Alyssa, Myrjun, Lindsay, Lara
Displacement Reactions Lab Report
Purpose: To observe and compare single and double displacement reactions.
Hypothesis: If a metal element is mixed with an ionic compound, one metal will displace the other to create a new ionic compound. If 2 ionic compounds are mixed together, then the metals will displace each other, creating 2 new ionic compounds.
Materials: Goggles, large well plate, steel wool, scoopula, 4 small beakers, dropper, 4 pieces of magnesium ribbon, 4 pieces of zinc metal, 4 pieces of copper wire, copper (II) sulfate solution, zinc nitrate solution, magnesium nitrate solution, sodium carbonate solution and hydrochloric acid.
Procedure:
Part A: Single Displacement Reactions 1. Clean 4 pieces of magnesium ribbon, zinc metal and copper wire with steel wool until they are shiny. 2. Half-fill one column (three wells) of the well plate with the copper (II) sulfate solution. 3. Half-fill a second column (three wells) with the zinc nitrate solution. 4. Half-fill a third column (three wells) with the hydrochloric acid. 5. In each column, place 1 piece of each metal in different wells (Magnesium in one well, zinc in another and copper in the last). Use a toothpick to keep the metals submerged in the solution. 6. Observe the different reactions in each well. Record your observations in a table. 7. Save the contents of the wells for Part B.
Part B: Double Displacement Reactions 1. Add 3 drops of the sodium carbonate solution to each of the wells from Part A. 2. Record your observations in a table. 3. Dispose of the contents of the well plate as directed by your teacher. Clean your workstation and wash your hands.

Observations: Reactants | Physical Properties | Results | Physical/Chemical Changes | Copper (II) sulfate | Blue, clear, liquid | N/A | N/A | Zinc | Shiny, silver, solid, metal, thin | Becoming dull,turning black | Lost its lustre, colour changed | Copper | Thin, shiny, metal, solid | N/A | N/A | Magnesium | Thin, shiny, metal, solid, silver | Black substance starts to form (rusting), won’t sink, bubbles formed | New substance was formed, bubbles of gas was created | | | | | Zinc Nitrate | Clear, liquid | N/A | N/A | Zinc | Shiny, silver, solid, metal, thin | Sank to the bottom | N/A | Copper | Thin, shiny, metal, solid | Sank to the bottom | N/A | Magnesium | Thin, shiny, metal, solid, silver | Won’t sink | N/A | | | | | Magnesium Nitrate | Clear, liquid | N/A | N/A | Zinc | Shiny, silver, solid, metal, thin | Sank to the bottom | N/A | Copper | Thin, shiny, metal, solid | Sank to the bottom | N/A | Magnesium | Thin, shiny, metal, solid, silver | Won’t sink | N/A | | | | | Hydrochloric Acid(HCL) | Clear, liquid | N/A | N/A | Zinc | Shiny, silver, solid, metal, thin | Small bubbles start to form | N/A | Copper | Thin, shiny, metal, solid | Sank to the bottom | N/A | Magnesium | Thin, shiny, metal, solid, silver | Big bubbles start to form, gas starts to form | N/A |

Sodium Carbonate Mixed With… | Results | Copper (II) sulfate | Creates a precipitate, became a viscous liquid | Zinc nitrate | Creates a precipitate | Magnesium nitrate | N/A | Hydrochloric acid | Creates bubbles |

Conclusion: Based on the experiments our group has conducted, we have concluded that our hypothesis applies to specific solutions (Copper (II) sulfate and Hydrochloric acid) because those solutions created the most chemical reactions. When we put the three different metals into the zinc nitrate and magnesium nitrate solutions, our group was often left staring at the wells waiting for something to happen. Therefore, after the experiments our group conducted, our hypothesis was half right and half wrong.
Analysis and Evaluate Questions: a. In part A of the lab, when we put the piece of zinc metal into the copper (II) sulfate solution which made the once lustrous and silver metal black. This signifies that a chemical reaction did in fact occur because there was a change in colour. In part B of the lab, we added the sodium carbonate solution to each of the wells and a white substance (precipitate) formed on the bottom, signifying another chemical reaction. b. #1 Magnesium
#2 Zinc
#3 Copper c. #1 Copper (II) sulfate
#2 Zinc nitrate
#3 Hydrochloric acid
#4 Magnesium nitrate d. We noticed that the most reactive metal is the least reactive solution. For example, magnesium ribbon on its own is more reactive then zinc and copper. If you put magnesium into a solution, then it is the least reactive. e. Copper (II) Sulfate Solution: • CuSO4 + Mg Cu + MgSO4 • CuSO4 + Zn Cu + ZnSO4 • CuSO4 + Cu Cu + CuSO4
Zinc Nitrate Solution: • Zn(NO3)2 + Mg Zn + Mg(NO3)2 • Zn(NO3)2 + Zn Zn + Zn(NO3)2 • Zn(NO3)2 + Cu Zn + Cu(NO3)2

Magnesium Nitrate Solution: • Mg(NO3)2 + Mg Mg + Mg(NO3)2 • Mg(NO3)2 + Zn Mg + Zn(NO3)2 • Mg(NO3)2 + Cu Mg + Cu(NO3)2 f. Cu + Zn(NO3)2 + Na2CO3 Cu + NaNO3 + ZnCO3
Balanced = Cu + Zn(NO3)2 + Na2CO3 Cu + 2NaNO3 + ZnCO3

Zn + Mg(NO3)2 + Na2CO3 Zn + NaNO3 + MgCO3
Balanced = Zn + Mg(NO3)2 + Na2CO3 Zn + 2NaNO3 + MgCO3

Mg + CuSO4 + Na2CO3 Mg + Na2SO4 + CuCO3
Balanced = Already balanced

g. It was necessary to clean the metal surfaces before putting them in the solutions because the dirt or residue on the metals could change the way it reacts with the solution.
Apply and Extend Questions: h. Yes, magnesium will react with lead (II) nitrate because it is a metal like zinc. Just like the zinc metal displaced the lead (II), the magnesium will do the same. The equation with magnesium would be: Mg + Pb(NO3)2 Mg(NO3)2+Pb i. Hard water contains high concentrations of calcium and magnesium. It's not a health risk but it can be a nuisance as it has the tendency to cause mineral buildup in water pipe and heating systems. Hard water isn't a health hazard but drinking it might contribute a small amount of Calcium and Magnesium for human dietary needs. Drinking hard water daily can result in hypercalcemia which is why it's better to drink soft water.

Sodium carbonate (Na2CO3) is a washing soda. If sodium carbonate is added to water, it can no longer dissolve the calcium and magnesium ions because calcium carbonate and magnesium carbonate are not soluble.

Similar Documents

Free Essay

Physics 310 Midterm

...Question 1.1. (TCO 2) A skier begins skiing straight down a hill having a constant slope, starting from rest. If friction is negligible, as the skier goes down the hill, his or her (Points : 5) |        acceleration is zero.        acceleration increases with time.        acceleration is constant, with a value of roughly 10 m/s/s.        acceleration is constant, with a value less than 10 m/s/s.   | Question 2.2. (TCO 1) You walk  53 m to the north, then turn 60° to your right and walk another 45 m. Determine the direction of your displacement vector. Express your answer as an angle relative to east. (Points : 5) |        50° N of E        57° N of E        63° N of E        69° N of E   | Question 3.3. (TCO 3) In a shuffleboard game, the puck slides a total of 12 m before coming to rest. If the coefficient of kinetic friction between the puck and board is 0.28, which was the initial speed of the puck? (Points : 5) |        6.5 m/s        7.3 m/s        8.1 m/s        29.0 m/s | Question 4.4. (TCO 4) Find the resultant acceleration of a particle moving on a circle of radius 0.70 m, if its angular speed is 37 rpm and its tangential acceleration is 2.9 m/s2. Express the angle with respect to the tangential velocity vector (i.e., +90° points radially out). (Points : 5) |        10.9 m/s2 at -75        10.9 m/s2 at +75        37.9 m/s2 at -75        37.9 m/s2 at +75 | | 7. (TCO 3) A mosquito collides head-on with a car traveling at 60 mph...

Words: 525 - Pages: 3

Free Essay

Vector

...VELOCITY AND ACCELERATION Here, we show how the ideas of tangent and normal vectors and curvature can be used in physics to study:  The motion of an object, including its velocity and acceleration, along a space curve. VELOCITY AND ACCELERATION In particular, we follow in the footsteps of Newton by using these methods to derive Kepler’s First Law of planetary motion. VELOCITY Suppose a particle moves through space so that its position vector at time t is r(t). VELOCITY Vector 1 Notice from the figure that, for small values of h, the vector r(t h) r(t ) h approximates the direction of the particle moving along the curve r(t). VELOCITY Its magnitude measures the size of the displacement vector per unit time. VELOCITY The vector 1 gives the average velocity over a time interval of length h. VELOCITY VECTOR Equation 2 Its limit is the velocity vector v(t) at time t : r(t h) r(t ) v(t ) lim h 0 h r '(t ) VELOCITY VECTOR Thus, the velocity vector is also the tangent vector and points in the direction of the tangent line. SPEED The speed of the particle at time t is the magnitude of the velocity vector, that is, |v(t)|. SPEED This is appropriate because, from Equation 2 and from Equation 7 in Section 13.3, we have: ds | v(t ) | | r '(t ) | dt = rate of change of distance with respect to time ACCELERATION As in the case of one-dimensional motion, the acceleration...

Words: 3233 - Pages: 13

Free Essay

Student

...Steering Behaviors For Autonomous Characters Craig W. Reynolds Sony Computer Entertainment America 919 East Hillsdale Boulevard Foster City, California 94404 craig_reynolds@playstation.sony.com http://www.red.com/cwr/ cwr@red.com Keywords: Animation Techniques, Virtual/Interactive Environments, Games, Simulation, behavioral animation, autonomous agent, situated, embodied, reactive, vehicle, steering, path planning, path following, pursuit, evasion, obstacle avoidance, collision avoidance, flocking, group behavior, navigation, artificial life, improvisation. Abstract This paper presents solutions for one requirement of autonomous characters in animation and games: the ability to navigate around their world in a life-like and improvisational manner. These “steering behaviors” are largely independent of the particulars of the character’s means of locomotion. Combinations of steering behaviors can be used to achieve higher level goals This paper divides motion behavior into three levels. It will focus on the (For example: get from here to there while avoiding obstacles, follow this corridor, join that group of characters...) middle level of steering behaviors, briefly describe the lower level of locomotion, and touch lightly on the higher level of goal setting and strategy. Introduction Autonomous characters are a type of autonomous agent intended for use in computer animation and interactive media such as games and virtual reality. These agents represent a This stands...

Words: 10766 - Pages: 44

Premium Essay

Split Cycle Engine and Graphene: the Future of Automobiles

...MIS TERM PAPER on Split Cycle Engine and Graphene: the future of Automobiles Vinod Gupta School of Management IIT Kharagpur Submitted in partial fulfilment of Management Information Systems Course (BM61014) to Dr. Prithwis Mukherjee at VGSOM, IIT Kharagpur Submitted by : Mayank Mohan 10BM60048 Page | 0 CONTENTS TOPIC Page No ABSTRACT INTRODUCTION TO SPLIT CYCLE TECHNOLOGY BASIC PRINCIPLES OF SPLIT CYCLE ENGINE OTHER SPLIT CYCLE TECHNOLOGY: TOUR ENGINE GRAPHENE : THE MATERIAL FOR THE FUTURE AUTOMOBILES FUTURE OF AUTOMOBILE INDUSTRY IN INDIA HURDLES TO SPLIT CYCLE TECHNOLOGY SUMMARY AND CONCLUSION REFERENCES 1 2 3 8 9 10 13 15 16 Page | 1 ABSTRACT Split Cycle Engine and Graphene : the future of Automobiles The Split-Cycle Engine functions by dividing (or splitting) the four strokes of the Otto cycle over a paired combination of one compression cylinder and one power cylinder. Gas is compressed in the compression cylinder and transferred to the power cylinder through a gas passage. Graphene is a 2-dimensional network of carbon atoms. These carbon atoms are bound within the plane by strong bonds into a honeycomb array comprised of six-membered rings. This paper describes that how combining these two may lead to a sustainable future by tackling problems like low mileage and low efficiency of automobile engines leading to low consumption of fossil fuels . Page | 2 Introduction to Split Cycle Technology The Split-Cycle Engine was originally...

Words: 2999 - Pages: 12

Free Essay

Compare and Contrast

...Jefry Almonte Mr.Ivers English 4 10/20//2014 Pedal To The Metal The Lamborghini Aventador coupe and the Ferrari 458 Italia are the two top super cars in the world today. The Lamborghini has the edge over the Ferrari with the size and durability, However, The Ferrari is said to be the fastest and the most mobile. The Lamborghini has over 200 more horsepower than the Ferrari. When it comes to the engines The Ferrari has a 4.5 liter engine while the Lamborghini has a 6.5 liter engine. Compared to the 458 Italia the Lamborghini is evidentially faster through description in its engine. When it comes to the fuel they both take premium gasoline. The Ferrari Fuel mileage in the city is 13 miles per gallon. On the highway it only gets 17 miles per gallon (Stephen). If you were to average those numbers the Ferrari would have 14 miles per gallon which is bad considering it has a V8. The Ferrari also has an auto am-7 chip in the Ferrari increases the performance and calculates the correct combinations of air fuel and spark to produce the power (Car and Driver). The Lamborghini gets 11 miles to the gallon in the city. On the highway it gets 17 miles per gallon. If you were to average the city and the highway it would get 13 miles per gallon combined (Automobil). Considering the Lamborghini has a V12, a V12 engine is an engine with 12 cylinders mounted on the crankcase in two banks of six cylinders, usually but not always at a 60° angle to each other, with all 12pistons driving a...

Words: 1276 - Pages: 6

Premium Essay

Timeline

...Stage 1 1800 Major Historical Changes: The country is still considered a colonial settlement of England. Changing Population Size: The population size is low. Birth and Death Rates: The birth rates and death rates are high as women have many children and there is a high mortality rate. Environmental Impact: Environmental impact remains low due to the small number of people. Stage 2 1900 Major Historical Changes: There is increasing food availability through agricultural expansion, which eliminates starvation and also causes the death rate to decrease. Changing Population Size: The population size is increasing. Women are still having many children. Birth and Death Rates: There are high birth rates but decreasing death rates. Environmental Impact: Environmental impact is increasing as frontier land begins to be developed. Urbanization is increasing and people are beginning to move to cities. Stage 3  1960  Changing Population Size: The population size is increasing—also known as the baby boom. Birth and Death Rates: There are lower birth rates and lower death rates. Environmental Impact: There is increasing urbanization and industrialization. Pollution and toxic chemicals cause problems with the increasing industrialization and burning of fossil fuels.  Stage 4  1990  Changing Population Size: The size of population stabilizes. Birth and Death Rates: There are low birth rates and low death rates. Environmental Impact: The high standard of living...

Words: 253 - Pages: 2

Free Essay

Otto Cycle

...In this article, compiled by R.F. Huang, H.S. Yang, and C. N. Yeh, the experiment involved the in-cylinder flow structures and turbulence intensities in the symmetry and offset planes of a motored four-valve, four-stroke engine during the intake and compression strokes.3 This is carried out by using a particle image velocimeter. The in-cylinder flow is a decisive factor for combustion in the engine, which in turn provides significant effects on the engine performance. Generating a significant vertical flow motion (swirl-like motion) inside the engine cylinder during the intake process is one of the more promising ways to achieve fast burning rate. This is because a well defined single vortical structure is more stable than other large scale in-cylinder flows and, therefore, may break up later in the cycle giving higher turbulence during combustion.3 This experiment studied two pistons of different crown shapes (flat-crown and slightly concave-crown pistons), as shown in Figure 2. The origin, establishment, and evolution of the tumbling vortical flow structures during the intake and compression strokes are clearly depicted.3 Quantitative strengths of the rotating vortical flow motions are presented by a dimensionless parameter, the tumble ratio, which can represent the mean angular velocity of the vortices in the target plane. The turbulence intensity of the in-cylinder flow was calculated by using the measured time-varying velocity data.3 The results show that the flat-crown...

Words: 309 - Pages: 2

Free Essay

Talking Paper

...3802 DWR 25 Jul 15 Talking Paper For use by Motor Transportation Platoon Commander SUBJECT: Guidance for Change in Mission of Motor Transportation Platoon PURPOSE: To provide recommendations in prioritizing and sourcing guidance ggggggggggfor change in MT Platoon’s mission on the upcoming deployment. ISSUES: (1) Issue 1 Background: a. With the change of mission from logistical resupplies to security, patrolling and reaction force preservation, proper training requirements need to be identified IOT for the platoon to be mission capable and prepared for the upcoming deployment. Talking Points a. Make liaison with the Operations officer for the unit we will be supporting. This will give us an understanding on what kind of missions we can train for, along with the mission essential task. Using the Infantry Training and Readiness Manual 3500.44 as a training standard will also help prepare the Marines for the new mission. Also using the above references will provide training techniques in which the platoon will need to be proficient in. (2) Issue 2 Background: a. What kind of maintenance capabilities will we have now that we won’t be part of the MLG? What certifications will the Marines need? What equipment and modifications will be required for the vehicles? Talking...

Words: 352 - Pages: 2

Premium Essay

Split Cycle Ic Engine

...SPLIT CYCLE IC ENGINE Abstract: The Split-Cycle Engine changes the heart of the conventional engine by dividing (or splitting) the four strokes of the Otto cycle over a paired combination of one compression cylinder and one power cylinder. Gas is compressed in the compression cylinder and transferred to the power cylinder through a gas passage. The gas passage includes a set of uniquely timed valves, which maintain a precharged pressure through all four strokes of the cycle. Shortly after the piston in the power cylinder reaches its top dead center position, the gas is quickly transferred to the power cylinder and fired (or combusted) to produce the power stroke. Split-cycle internal combustion engine claims have the potential to double fuel efficiency for same size engine, while reducing the manufacturing price by up to 50% which includes a built in dedicated compressor. Rather than using batteries and electric motors/generators to harness braking energy, the engine uses the air compressor. A split cycle engine includes a novel compressor apparatus driven by the combustion engine, a closed-cycle refrigeration system in cooperation with the compressor apparatus, and a pneumatic motor driven by compressed air from the compressor apparatus. Refrigerant in the compressor absorbs thermal energy from compressed air and assists in compressing the air. High-pressure air from the compressor is stored in a storage tank and may be used to drive the pneumatic motor or other auxiliary equipment...

Words: 281 - Pages: 2

Premium Essay

Split Cycle Engine

...WWW.TPAPERS.BLOGSPOT.COM SPLIT CYCLE IC ENGINE www.tpapers.blogspot.com For more papers www.tpapers.blogspot.com Help your fellow students… Explore more…. Mail your papers to totpapers@gmail.com SPLIT CYCLE IC ENGINE Abstract: The Split-Cycle Engine changes the heart of the conventional engine by dividing (or splitting) the four strokes of the Otto cycle over a paired combination of one compression cylinder and one power cylinder. Gas is compressed in the compression cylinder and transferred to the power cylinder through a gas passage. The gas passage includes a set of uniquely timed valves, which maintain a precharged pressure through all four strokes of the cycle. Shortly after the piston in the power cylinder reaches its top dead center position, the gas is quickly transferred to the power cylinder and fired (or combusted) to produce the power stroke. Split-cycle internal combustion engine claims have the potential to double fuel efficiency for same size engine, while reducing the manufacturing price by up to 50% which includes a built in dedicated compressor. Rather than using batteries and electric motors/generators to harness braking energy, the engine uses the air compressor. A split cycle engine includes a novel compressor apparatus driven by the combustion engine, a closed-cycle refrigeration system in cooperation with the compressor apparatus, and a pneumatic motor driven by compressed air from the compressor apparatus. Refrigerant in the compressor absorbs thermal...

Words: 3266 - Pages: 14

Free Essay

Cars

...STUDY OF FOUR STROKE DIESEL ENGINE Ex. No : Date : AIM: To study the various parts and mechanism of four stroke diesel engine. STUDY OF ENGINE COMPONENETS AND MECHANISMS: The following are major component in a four-stroke diesel engine. 1. Cylinder 2. Cylinder head 3. Piston 4. Piston rings 5. Connecting rod 6. Crank shaft 7. Piston pin 8. Inlet valve 9. Inlet manifold 10. Exhaust valve 11. Exhaust manifold 12. Cam and cam-follower 13. Fly wheel 14. Cam shaft 15. Push rod 16. Valve spring 17. Rocker arm 18. Fuel Nozzle 19. Fuel pump 20. Cam shaft drive mechanism 21. Crank case 22. Governor 23. Water Jacket TERMS COMMONLY USED: TOP DEAD CENTER (TDC): The top most position of the piston towards the cylinder head and the topside of the cylinder of the vertical engine are called top dead center position. BOTTOM DEAD CENTER (BDC): The lowest most position of the piston towards the crank end side of the cylinder of a vertical engine is called bottom dead center position. WORKING OF FOUR STROKE DIESEL ENGINE: The working cycle of the engine is completed in four strokes and diesel oil is used as fuel. Therefore it is known as four-stroke diesel engine. The following are the four working stroke of the engine. SUCTION STROKE: The piston is at the top most position and is ready to move downwards. ...

Words: 1410 - Pages: 6

Free Essay

Public Services

...bodies such as the legs , calf muscles and building up our core strength, one example is that we did something called “plank and roll” this was fun but difficult when holding into the plank but I felt this got me warmed up and got me very fit, therefore I explored various warm ups and exercises that will help me in the future. Within this session I had explored a lot about the methods and elements of dance the task was on one of the methods of dance which is “Action and Reaction, from previously using action and reaction In acting sessions i had a bit of a clue in what it could be and it was basically reacting to one another by giving one person an action for them to react to. The second part of the task was to get into pairs and we did this with the second year dancers who we didn’t know that well but this gave us a chance to communicate and get to know each other as well as working together. Once we was in pairs we then got asked to name each other A or B , in this task A was action and B was reaction. Marie showed an example of what she wanted us to do in pairs, she got poppy one of the second year students to stand still and Marie would tap one part of her body and poppy would react she did this by moving the arm fluently , or move her head slowly around or bend the knee. B then became A and we did the same thing. After this we then did the same thing but...

Words: 621 - Pages: 3

Free Essay

Jonny Tom

...Graded Assignment Lab Report Answer the questions below. When you have finished, submit this assignment to your teacher by the due date for full credit. (8 points) |Score | | | 1. Part 2: Single-Displacement Reactions: For each four single-displacement reaction, describe what happened in each well. If a chemical reaction occurred, write a balanced equation for it. Then use the A, B symbols to write a general equation for a single-displacement reaction. Here are the chemical formulas of the reactants for each reaction: • zinc – Zn copper sulfate – CuSO4 • aluminum – Al copper sulfate – CuSO4 • zinc – Zn silver nitrate – Ag(NO3) • copper – Cu silver nitrate – Ag(NO3) Answer: (8 points) |Score | | | 2. Part 3: Double-Displacement Reactions: For each double-displacement reaction, describe what happened in each well, including the colors of any products that formed. If a chemical reaction occurred, write a balanced equation for it. Then use the A, B symbols to write a general equation for a double-displacement reaction. Here are the chemical formulas of the reactants for each reaction: • sodium chloride – NaCl copper sulfate – CuSO4 • sodium hydroxide – NaOH copper sulfate – CuSO4 • sodium phosphate – Na3PO4 copper sulfate – CuSO4 • sodium chloride – NaCl silver nitrate...

Words: 278 - Pages: 2

Premium Essay

Mine

...Types of Chemical Reactions The vast number of chemical reactions can be classified in any number of ways. Under one scheme they can be categorized either as oxidation-reduction (electron transfer) reactions or non-oxidation-reduction reactions. Another completely different but common classification scheme recognizes four major reaction types: (1) combination or synthesis reactions (2) decomposition reactions (3) substitution or single replacement reactions (4) metathesis or double displacement reactions The Four Major Types of Reactions Name General Reaction Pattern Combination or synthesis A + B ----> AB Decomposition AB ----> A + B Substitution or Single Replacement A + BC ----> B + AC Metathesis or Double Displacement AB + CD ----> AD + CB Combination or Synthesis Reactions Two or more reactants unite to form a single product. S + O2 ---------> SO2 sulphur oxygen sulphur dioxide 2 S + 3 O2 ---------> 2 SO3 sulphur oxygen sulphur trioxide 2 Fe + O2 ---------> 2 FeO iron oxygen ...

Words: 382 - Pages: 2

Premium Essay

Chemical Reactions Lab

...This lab report identified different types of reactions in various chemical changes. Through the five experiments completed in class, the creation of bubbles indicating a new gas formed, colour change, and production of light were observed. From reactions A and B, it can be concluded that single displacement reactions are indicated when three elements are present, two of which are of like charges that switch places during the chemical reaction. Both reactions involved an element with a negative charge (Cl) and two elements with positive charges (Cu (II) & Al and H & Mg), which then traded places during the reaction. As well, from reactions C and D, it can be concluded that double displacements occur when four elements (or two compounds) are...

Words: 312 - Pages: 2