Physical & Chemical Changes Review

Physical & Chemical Changes Review

Let's review before our experiment!!

Multiple Choice

Let's see who was listening...

Would water freezing, and changing into an ice cube be a physical change? (hint: change of state)

• no

• yes

Multiple Choice

What do you think?

If I fold and cut a piece of paper to make a snowflake, what type of change would occur to the paper?

• chemical change

• physical change

Multiple Select

CHALLENGE:

Which items in the list below indicate there has been a chemical change?

(Hint: there a 3 correct answers)

• NO new substance is formed

• Boiling a liquid (change in state of matter)

• A permanent change has occurred - it can't be undone.

• A NEW substance is formed (like gas or rust)

• An unexpected color change occurs

Make it change!

• Let's apply what you have reviewed so far. You will look at the pictures and decide how you could make a physical or chemical change.

Multiple Select

Which two ways could you physically change the steak?

• freeze it

• burn it

• cut it

Multiple Select

Which two ways could you chemically change the steak?

• leave it out to rot

• burn it

• cut it

Multiple Select

Select the action below that would create a chemical change to the nails.

• leave them in the rain to rust

• hammer them into a piece of wood

Multiple Choice

How could you physically change the nails?

• leave them in the rain to rust

• bury them in the dirt

• bend them into a hook

No it's time to see this in action!

Get ready for the Balloon Experiment!