Chemical Reactions

Front

A chemical change is different than a physical change because in a chemical change

Back

a new substance is formed and in a physical no new substance is formed

Front

How many Carbons are present on the reactant side?

Back

1

Front

How many Hydrogens are on the product side of this chemical equation?

Back

4

Front

How many Oxygens are on the product side of this chemical equation?

Back

4

Front

In a chemical reaction, if the reactants are heated, the reaction usually happens

Back

faster

Front

What is the purpose of a catalyst in a chemical reaction?

Back

To speed up the reaction.

Front

Is this chemical equation balanced? Why or why not?

Back

No, none of the elements (carbon, hydrogen, or oxygen) are the same amount on both the reactant and product side.

Front

Which is the correct word equation for photosynthesis?

Options:

• water + glucose + oxygen ---> energy + carbon dioxide
• energy + oxygen + carbon dioxide ---> water + glucose
• water + carbon dioxide + energy ---> glucose + oxygen
• glucose + oxygen ---> water + carbon dioxide + energy

Back

water + carbon dioxide + energy ---> glucose + oxygen

Front

Which of the following is the word equation for cellular respiration?

Options: water + carbon dioxide + energy ---> glucose + oxygen, water + glucose ---> energy + carbon dioxide + oxygen, oxygen + carbon dioxide ---> water + energy + glucose, glucose + oxygen ---> water + carbon dioxide + energy

Back

glucose + oxygen ---> water + carbon dioxide + energy

Front

Where does photosynthesis take place?

Back

chloroplast