Elements, Compounds, and Mixtures

Elements, Compounds, and Mixtures

Assessment

Flashcard

Chemistry

7th Grade

Practice Problem

Hard

Created by

Wayground Content

FREE Resource

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15 questions

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1.

FLASHCARD QUESTION

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that are not chemically bonded together. Examples include air, salad, and sand.

2.

FLASHCARD QUESTION

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means. Examples include hydrogen, oxygen, and gold.

3.

FLASHCARD QUESTION

Front

What is a compound?

Back

A compound is a substance formed when two or more different elements are chemically bonded together. Examples include water (H2O) and carbon dioxide (CO2).

4.

FLASHCARD QUESTION

Front

Are compounds found on the periodic table?

Back

No, because only elements are listed on the periodic table.

5.

FLASHCARD QUESTION

Front

What are subscripts in a chemical formula?

Back

Subscripts are numbers written below and to the right of a chemical symbol in a formula, indicating the number of atoms of that element in the compound.

6.

FLASHCARD QUESTION

Front

What is the difference between a compound and a mixture?

Back

A compound is made of two or more elements chemically bonded together, while a mixture is a combination of substances that are not chemically bonded.

7.

FLASHCARD QUESTION

Front

Can a mixture be separated by physical means?

Back

Yes, mixtures can be separated by physical means such as filtration, distillation, or evaporation.

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