Group mates Name : Date : March 14,2014 Hazel Gubuan Searl Paul Escalona Rachel joy Canilas Jhon Rex Benico Rochelle Lasic Katherin Mendoza Karen Jeane Banatao
Activity #1 Evidences of Chemical Change
Name : Ellene C. Gabane III-Malinis
Group mates Name : Date : Feb. 13 , 2014 Hazel Gubuan Searl Paul Escalona Rachel joy Canilas Jhon Rex Benico Rochelle Lasic Katherin Mendoza Karen Jeane Banatao
Introduction This report refers to the changes that occur when substances undergo chemical change. A chemical change involves the formation of new substances. The properties and composition of the new substances vary greatly with those of the original substance. Physical changes involve changes in physical properties, such as size, shape, and density, or changes in phase (solid to gas, liquid to solid) without undergoing a change in the composition of the substance. This experiment is where the substance in original appearance was changed into another form of substance or solution. The objective was to observe the three solutions when there was a change in chemical form and its appearance. A chemical change is indicated either by changes color, formation of a solid compound or precipitate, release of a gas, or release or absorption of heat.
Materials : Potassium iodide egg shell lead nitrate vinegar test tubes HCl zinc powder beaker
Method :
A Mix the potassium iodide & lead
