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Transcript

Chemical Changes

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Freezing

Question 1/5

Which is NOT a sign of chemical changes?

Prodction of gas.

Formation of a Percipitate

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Right!

Question 2/5

Unexpected change in tempeture

precipitation

What is the sign of a chemical change called when a new solid is formed.

Percipatate

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Right!

How do I know it is a CHEMICAL change and not a physical change?

Question 3/5

Nothing happens

Two or more substances come together

A new substance is formed

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Next

B

Question 4/5

A

Both

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Next

Question 5/5

A solid turns into a liquid.

A gas-filled balloon expands and the balloon pops.

Which of the following is evidence of a chemical change?

Two liquids are mixed and a yellow precipitate appears.

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Right!

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