Chemical Reaction Unit Review

Chemical Reaction Unit Review

Assessment

Flashcard

Science

7th Grade

Hard

Created by

Wayground Content

FREE Resource

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15 questions

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1.

FLASHCARD QUESTION

Front

What is a neutron?

Back

A neutron is a subatomic particle found in the nucleus of an atom, with no electric charge.

2.

FLASHCARD QUESTION

Front

What are elements?

Back

Elements are pure substances that cannot be broken down into simpler substances by chemical means. They are listed on the Periodic Table.

3.

FLASHCARD QUESTION

Front

What is a chemical change?

Back

A chemical change is a process where substances combine or break apart to form new substances, such as burning paper.

4.

FLASHCARD QUESTION

Front

Do all phase changes require energy?

Back

True. All phase changes (like melting or boiling) require energy to be added or taken away.

5.

FLASHCARD QUESTION

Front

What is the chemical symbol for copper?

Back

The chemical symbol for copper is Cu.

6.

FLASHCARD QUESTION

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition.

7.

FLASHCARD QUESTION

Front

What is the difference between a compound and an element?

Back

A compound is a substance formed when two or more elements chemically bond together, while an element is a pure substance that cannot be broken down.

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