Unit 3: Chemical Reactions and Equations Final Assessment Review

Unit 3: Chemical Reactions and Equations Final Assessment Review

Assessment

Flashcard

Science

7th Grade

Hard

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16 questions

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1.

FLASHCARD QUESTION

Front

Is this equation balanced?

Back

Yes

2.

FLASHCARD QUESTION

Front

What kind of matter is salt (NaCl)?

Back

Compound

3.

FLASHCARD QUESTION

Front

Carbon dioxide can be poured out of a bottle. It sinks in the air. This shows it is:

Back

More dense than air

4.

FLASHCARD QUESTION

Front

What does the Law of Conservation of Mass state?

Back

No new atoms can be made or destroyed

5.

FLASHCARD QUESTION

Front

What coefficient should go in the last blank space in order for the equation to be balanced?

Back

2

6.

FLASHCARD QUESTION

Front

What is a chemical reaction?

Back

A process where substances (reactants) transform into new substances (products).

7.

FLASHCARD QUESTION

Front

What is the difference between a compound and a mixture?

Back

A compound is a substance formed when two or more elements chemically bond, while a mixture is a combination of two or more substances that retain their individual properties.

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