4.1 and 4.2 Modified quiz

How many Carbon atoms are in this compound: C₁₂H₂₂O₁₁

• 22

• 12

How many Oxygen atoms are in this compound: C₁₂H₂₂O₁₁

• 11

• 12

How many Hydrogen atoms are in this compound: C₁₂H₂₂O₁₁

• 12

• 22

Check ALL the boxes that show the signs of a chemical change.

• sound and smell

• air

• color change

• gas (bubbles) produced

• forces

Which of the following is an example that includes evidence of a chemical reaction?

• A tomato is placed into a blender and chopped up into smaller pieces.

• Sugar that is burned gives off an odor and turns brown and then black.

Which is NOT an indication of a chemical change?

• shape change

• production of light

The reactants in the image above are:

• 2 H2O and CO2

• CH4 and 2 O2

When a new substance forms as a result of a chemical reaction, what type of change has occurred?

• Chemical Change

• Physical Change

What is the left part of a chemical equation called?

2H_{2 +} O₂ --> 2H₂O

• Reactants

• Products

What is the right part of a chemical equation called...

2H_{2 +} O₂ --> 2H₂O

• Reactants

• Products