Download Name: Chemistry Test Review 1. Write the chemical equation for

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Chemistry Test Review
Write the chemical equation for photosynthesis.
Is boiling water a chemical or physical change? WHY?
Which pours faster, hot or cold syrup? Why?
Is melting ice a physical or chemical change? Explain why
What is temperature?
Identify the REACTANTS and the PRODUCTS of respiration
Imagine that in a chemical reaction there were 8 atoms of oxygen, 16 atoms of hydrogen and 8
atoms of carbon in the reactants. How many atoms of oxygen, hydrogen and carbon should there
be in the products? WHY?
8. Identify ONE thing that will speed up a reaction and explain WHY they speed up the reaction.
9. If you combine 10 grams of vinegar with 5 grams of baking soda, what would you expect the mass
of the products to be? WHY??
10. Explain the law of conservation of mass and energy.
11. Explain why chemical equations must be balanced.
12. Explain the statement “Natural laws operate today as they did in the past and they will continue to
do so in the future.”
13. In the liver and hydrogen peroxide lab, when you combined the liver and the hydrogen peroxide,
energy was released in the form of heat. Where was that energy stored before the reaction took
place?
14. When ice is melting, what happens to the temperature of the ice? Why?
15. Write THREE examples of physical change, TWO examples of chemical reactions, and ONE reason
why chemical equations must be balanced.