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Home › Chemistry Help › Quick 3 Page Chemical and Physical changes Chemistry Lab
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Quick 3 Page Chemical and Physical changes Chemistry Lab

Date Posted: 22/04/2019
Category: Chemistry
Due Date: 26/04/2019
Instruction
Introduction: Chemistry is the study of matter and the changes it undergoes. These changes are classified as physical or chemical changes. When a physical change occurs, the physical properties of the substance – such as size, shape, density, or state – are altered, but its chemical make-up remains the same. Chemical changes, also known as chemical reactions, result in the formation of one or more new substances with different chemical properties and composition from the original material. A chemical change can be indicated by any of the following observations: 1. change in color 2. production of heat, light or sound 3. evolution of a gas 4. formation of solid from 2 liquids (precipitation) In this investigation, you will conduct tests on several substances and then use your data to determine whether the resulting changes are chemical or physical. As you observe each change, remember to ask yourself, “Has the change altered the identity of the substances?” Write down what you observe with all five senses.
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