2425 cba review

2425 cba review

Assessment

Flashcard

Science

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 pure substance?

Back

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

2.

FLASHCARD QUESTION

Front

What is a mixture?

Back

A combination of two or more substances that are not chemically bonded and can be separated by physical means.

3.

FLASHCARD QUESTION

Front

What is a physical property?

Back

A characteristic of a substance that can be observed or measured without changing its identity, such as density, color, or melting point.

4.

FLASHCARD QUESTION

Front

What is density?

Back

The mass of a substance divided by its volume, often expressed in grams per cubic centimeter (g/cm³).

5.

FLASHCARD QUESTION

Front

What are balanced forces?

Back

Forces that are equal in size and opposite in direction, resulting in no change in motion.

6.

FLASHCARD QUESTION

Front

What is an example of balanced forces?

Back

A book resting on a table, where the force of gravity is balanced by the normal force from the table.

7.

FLASHCARD QUESTION

Front

What is a base?

Back

A substance that increases the concentration of hydroxide ions (OH-) in a solution.

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