Changes in state of matter.

A reaction creates new substances.

With a physical change, no new substance is formed.

Two students mix vinegar and baking soda. They observe bubbles forming, baking soda dissolving, and vinegar turning cloudy. They infer that a chemical change has occurred. Which data support this inference?

When sandpaper smooths a piece of wood, this is an example of a __________.

An example of a chemical change is __________.

What is not a possible sign of a chemical change?

A banana browning in the air is an example of __________.

A chemical change __________.

bleaching your hair

fireworks exploding

squeezing oranges to make orange juice

frying an egg

Melting ice cream

mixing flour and water to make dough

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