1.1.4 Changes in Matter

Open Ended

What ideas did you come up with to alter the piece of paper?

Multiple Choice

PHYSICAL changes can usually be easily reversed. (Think about the examples we just looked at)

• TRUE

• FALSE

Multiple Select

Which of the following are examples of physical changes?

• Crushing a can

• Melting chocolate

• Burning paper

• Boiling water

Multiple Choice

A change in matter that DOES NOT change its identity is an example of:

• PHYSICAL change

• CHEMICAL change

Multiple Choice

What happens to the CHEMICAL properties of a substance during a PHYSICAL change? (Ask yourself it if is the same substance or not)

• They remain the same

• They are altered

Multiple Choice

Why does the combination of vinegar and baking soda produce foamy bubbles?

• Because vinegar is a strong acid

• Because it is a chemical change

• Because it is a physical change

Multiple Choice

Why can physical changes often be reversed?

• Because they only impact physical properties, not chemical composition

• Because they create new substances

• Because they involve burning

Multiple Choice

What is the result when baking soda and vinegar are mixed together?

• A new substance is formed with bubbling and fizzing

• The mixture freezes

• No change occurs

• The mixture evaporates

Multiple Choice

According to the Law of Conservation of Mass: If you have a substance with a total mass of 50 grams, what can you expect the total mass of the substances produced to be after a chemical change?

• The total mass will be MORE than 50g

• The total mass will be LESS than 50g

• The total mass will be THE SAME- 50g