Physical vs Chemical Changes

Physical vs Chemical Changes

Assessment

Flashcard

Science

6th Grade

Hard

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15 questions

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1.

FLASHCARD QUESTION

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition. Examples include melting, freezing, and dissolving.

2.

FLASHCARD QUESTION

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances. It involves a chemical reaction and is usually irreversible. Examples include burning, rusting, and digestion.

3.

FLASHCARD QUESTION

Front

What is conductivity?

Back

Conductivity is the property of a material to conduct heat or electricity. Metals are typically good conductors.

4.

FLASHCARD QUESTION

Front

What evidence indicates a chemical change has occurred?

Back

Evidence of a chemical change includes color change, temperature change, gas production, and the formation of a precipitate.

5.

FLASHCARD QUESTION

Front

Is mowing the lawn a physical or chemical change?

Back

Mowing the lawn is a physical change because it alters the appearance of the grass without changing its chemical composition.

6.

FLASHCARD QUESTION

Front

What happens to ice when it melts?

Back

When ice melts, it undergoes a physical change from solid to liquid, but its chemical composition (H2O) remains the same.

7.

FLASHCARD QUESTION

Front

What is an example of a chemical change?

Back

An example of a chemical change is wood burning, which produces ash and smoke and changes the wood into different substances.

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