7th Grade TEKS Matter and Energy Review

7th Grade TEKS Matter and Energy Review

Assessment

Flashcard

Science

7th Grade

Hard

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15 questions

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1.

FLASHCARD QUESTION

Front

What is a chemical change?

Back

A process where substances combine or break apart to form new substances, often accompanied by energy changes.

2.

FLASHCARD QUESTION

Front

What is a physical change?

Back

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

3.

FLASHCARD QUESTION

Front

What is temperature?

Back

The measure of hotness or coldness of an object, typically measured in degrees Celsius or Fahrenheit.

4.

FLASHCARD QUESTION

Front

What is an element?

Back

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

5.

FLASHCARD QUESTION

Front

What is a compound?

Back

A substance formed when two or more elements chemically bond together in a fixed ratio.

6.

FLASHCARD QUESTION

Front

What are signs of a chemical reaction?

Back

Signs include color change, gas production, temperature change, and formation of a precipitate.

7.

FLASHCARD QUESTION

Front

What is rusting?

Back

A chemical reaction where iron reacts with oxygen and moisture to form iron oxide, commonly known as rust.

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