Chemistry Unit Review

Chemistry Unit Review

Assessment

Flashcard

Chemistry

6th 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 pure substance?

Back

A pure substance is a material that has a constant composition and consistent properties throughout. Examples include elements and compounds.

2.

FLASHCARD QUESTION

Front

What is a compound?

Back

A compound is a substance formed when two or more different elements are chemically bonded together.

3.

FLASHCARD QUESTION

Front

What is a molecule?

Back

A molecule is the smallest unit of a chemical compound that retains its chemical properties, consisting of two or more atoms bonded together.

4.

FLASHCARD QUESTION

Front

What is the chemical formula for water?

Back

H2O, which indicates that each molecule of water is made up of two hydrogen atoms and one oxygen atom.

5.

FLASHCARD QUESTION

Front

What is the chemical formula for nitrogen gas?

Back

N2, which indicates that nitrogen gas is made up of two nitrogen atoms bonded together.

6.

FLASHCARD QUESTION

Front

What is an endothermic reaction?

Back

An endothermic reaction is a chemical reaction that absorbs heat from its surroundings, resulting in a decrease in temperature.

7.

FLASHCARD QUESTION

Front

What is an exothermic reaction?

Back

An exothermic reaction is a chemical reaction that releases heat, resulting in an increase in temperature.

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