Unit 3 Structure and Matter Review

Unit 3 Structure and Matter Review

Assessment

Flashcard

Science

8th Grade

Hard

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16 questions

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1.

FLASHCARD QUESTION

Front

What is a heterogeneous mixture?

Back

A heterogeneous mixture is a combination of two or more substances where the individual components can be seen and easily separated, such as trail mix.

2.

FLASHCARD QUESTION

Front

What is a homogeneous mixture?

Back

A homogeneous mixture is a mixture in which the composition is uniform throughout, and the individual components are not visible, such as saltwater.

3.

FLASHCARD QUESTION

Front

What is a pure substance?

Back

A pure substance is made of only one type of atom or molecule and has consistent properties throughout.

4.

FLASHCARD QUESTION

Front

What is a mixture?

Back

A mixture consists of two or more substances that are combined but not chemically bonded, allowing for separation by physical means.

5.

FLASHCARD QUESTION

Front

How many total atoms are in the compound FeS₂?

Back

There are 3 total atoms in FeS₂ (1 iron atom and 2 sulfur atoms).

6.

FLASHCARD QUESTION

Front

How many sulfur (S) atoms are in the compound FeS₂?

Back

There are 2 sulfur atoms in the compound FeS₂.

7.

FLASHCARD QUESTION

Front

What is the difference between a pure substance and a mixture?

Back

A pure substance contains only one type of particle, while a mixture contains two or more different particles.

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