Chemical Reactions

Chemical Reactions

Assessment

Flashcard

Chemistry

8th Grade

Hard

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15 questions

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1.

FLASHCARD QUESTION

Front

What is a chemical change?

Back

A chemical change is a process where substances combine or break apart to form new substances with different properties.

2.

FLASHCARD QUESTION

Front

What is a physical change?

Back

A physical change is a process that alters the form or appearance of a substance but does not change its chemical composition.

3.

FLASHCARD QUESTION

Front

Is rusting of iron a chemical change?

Back

Yes, rusting of iron is a chemical change because it forms a new substance, iron oxide.

4.

FLASHCARD QUESTION

Front

Is spoiling food a chemical change?

Back

Yes, spoiling food is a chemical change as it involves the breakdown of food substances into new compounds.

5.

FLASHCARD QUESTION

Front

What happens during a physical change?

Back

During a physical change, the substance may change its state or appearance, but its chemical identity remains the same.

6.

FLASHCARD QUESTION

Front

Is melting ice a physical or chemical change?

Back

Melting ice is a physical change because it changes from solid to liquid without altering its chemical structure.

7.

FLASHCARD QUESTION

Front

What is a balanced chemical equation?

Back

A balanced chemical equation has equal numbers of each type of atom on both sides, representing the conservation of mass.

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