Brain Pop Quiz

How can you make a chemical change to paper?

• by folding it in half

• by tearing it

• by burning it

• by mailing it

Which example is both a physical AND a chemical change

• when food gets chewed and digested

• when a baseball is hit with a bat and caught with a glove

• when water is spilled on the floor and then mopped up

• when a guitar string is plucked or strummed

What is an example of a physical change?

• milk that turns sour

• dough that gets baked

• an old car that rusts

• a wet towel that dries

Vinegar REACTS with baking soda. When you combine vinegar and baking soda, it bubbles and lets off gas. What does REACT mean?

• to go through a chemical change

• to stop different physical changes

• to change states

• to stay the same

Which sentence is FALSE?

• you can undo a chemical change

• you can undo a physical change

• matter can change states after a physical change

• matter can change states after a chemical change

Which of the following is an example of a physical change?

• Water freezing into ice

• a piece of wood burning

• a toy car rusting

• zinc producing hydrogen gas when mixed with water

What type of change has occurred when a nail rusts?

• a physical change

• a chemical change

• an atomic change

• a reactive change

What does it mean when there is a physical change?

• Matter has changed from one substance into another

• Matter has changed on the molecular level

• a new substance has been formed

• matter has changed size, shape, or form

What is an example of a chemical change that happens inside your body?

• Food being broken down by enzymes in your stomach

• Food being broken into tiny pieces by your teeth

• Food being moved from your esophagus into your stomach

• Water being absorbed inside your large intestine

What is an example of a physical change that happens inside your body?

• Food being broken down by enzymes in your stomach

• Food being broken into small pieces by your teeth

• Food being moved from your esophagus into your stomach

• Water being absorbed inside your large intestine