Chemical Reactions - Topic 2 Unit Test

Which of the following is an example of a chemical reaction?

• The breakdown of food into energy
• Photosynthesis in plants
• Metal rusting
• All of the above
• None of the above

What is the substance produced by a chemical reaction called?

• Reactant
• Product
• Reagent
• Resultant
• Summation

What is a substance that is used up during a chemical reaction called?

• Reactant
• Product
• Reagent
• Resultant
• Summation

What kind of chemical reaction is where two substances combine to make a new substance?

• Synthesis reaction
• Decomposition reaction
• Displacement

What kind of chemical reaction can be represented by the equation A + BC ---> AC + B?

• Synthesis reaction
• Decomposition reaction
• Displacement

What does a catalyst do to a chemical reaction?

• Stops the reaction
• Starts the reaction
• Speeds up the reaction

When H20 (water) melts and changes state from ice to liquid it is a ___________________ reaction.

• Chemical
• Physical
• Musical

The mathematical representation that describes what happens in a chemical reaction is known as a

• Chemical equation
• Reactant
• Chemical Reaction
• Product

What does the Law of Conservation of Mass state?

• Matter cannot be created or destroyed in a chemical reaction.
• Matter can only be lost in a chemical reaction.
• Matter can only be gained in a chemical reaction
• Matter can be created or destroyed in a chemical reaction

What is the left part of a chemical equation called? H2 + O → H2O

• Reactants
• Products
• Yields
• Chemical equation