Chemical Reaction Review

How many atoms does substance 3 contain?

• 12
• 15
• 8
• 4

How many atoms does glucose have?

• 24
• 18
• 14
• 8

How many elements does substance 2 contain?

• 4
• 6
• 5
• 2

How many atoms are on the reactant side?

• 2
• 4
• 6
• 8

Is the following equation balanced?

• No, there are more atoms on the reactant side.
• No, there are more atoms on the product side.
• Yes, there are equal number of atoms on both sides.
• Yes, even though the reactant side has two more atoms.

How many atoms are on the product side?

• 3
• 4
• 30
• 25

Does the following equation demonstrate the Law of Conservation of Matter?

• Yes
• No

How many atoms are in a molecule of serotonin?

• 25
• 24
• 12
• 10

This happens in all chemical changes

• change in color
• gas is produced
• a new substance is formed
• change in temperature

What is mass of methane to the nearest hundredth of a gram is used in this reaction?

• 41.85g
• 12.15g
• 16.55g
• 15.20g