TEXAS- 6th Grade Science Review

Front

What is a chemical reaction?

Back

A process that involves the transformation of one or more substances into new substances.

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NGSS.MS-PS1-1

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Front

What is a characteristic shared by all chemical reactions?

Back

They form new substances.

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Front

What is heat transfer?

Back

The movement of thermal energy from one object to another.

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Front

What happens when you touch a hot stove?

Back

Heat transfers from the stove to your hand.

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Front

What is a sign of a chemical reaction?

Back

Formation of a new substance.

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NGSS.MS-PS1-2

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Front

What is a compound?

Back

A substance formed when two or more elements chemically bond together.

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NGSS.MS-PS1-1

Front

Which of the following is not a compound: HCl, Cl, NaCl, CO2?

Back

Cl is not a compound; it is an element.

Front

What is an element?

Back

A pure substance that cannot be broken down into simpler substances by chemical means.

Front

Which of the following represents an element: H2O, H2, NaCl, CaCO3?

Back

H2 represents an element.

Front

What is a precipitate?

Back

A solid that forms and settles out of a liquid mixture during a chemical reaction.

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NGSS.MS-PS1-2