Unit Review: Chemical Interactions

Unit Review: Chemical Interactions

Assessment

Flashcard

Science

7th Grade

Hard

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15 questions

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1.

FLASHCARD QUESTION

Front

What happens to the space between particles when a substance is heated?

Back

The space between the particles increases.

2.

FLASHCARD QUESTION

Front

What is a chemical reaction?

Back

A process where substances (reactants) are transformed into different substances (products) with different properties.

3.

FLASHCARD QUESTION

Front

What evidence indicates a chemical reaction has occurred?

Back

The products include different substances than the reactants.

4.

FLASHCARD QUESTION

Front

What is kinetic energy?

Back

The energy that an object possesses due to its motion.

5.

FLASHCARD QUESTION

Front

What happens to sugar when it melts?

Back

The kinetic energy of the sugar particles increases, allowing them to move past one another.

6.

FLASHCARD QUESTION

Front

What occurs when sugar dissolves in water?

Back

Liquid particles break sugar particles apart from one another.

7.

FLASHCARD QUESTION

Front

What is the difference between a physical change and a chemical change?

Back

A physical change alters the form of a substance without changing its identity, while a chemical change results in the formation of new substances.

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