CHEMICAL REACTION CT

Is this a physical or chemical change?

• Physical

• Chemical

In this example, what is the evidence a chemical change has occurred?

• volume is increased

• no energy is released

• gas is being released

• a precipitate has formed

Which of these is NOT an indicator of a chemical change?

• a change in color
• giving off or taking in of heat
• the release of gases
• a change in shape

Choose the best description below for the image

• physical change

• chemical change

Did a chemical change take place?

• yes

• no

Did a chemical change take place?

• yes

• no

Did a chemical change take place?

• yes

• no

Is the following equation balanced?

4Fe + 3O₂ ---> 2Fe₂O₃

• YES

• NO

How many Oxygen atoms are in 2SO₄?

• 1

• 2

• 4

• 8

___________________ are the elements or compounds that are formed in a chemical
reaction.

• Polymers
• Bonds
• Reactants
• Products