Chemistry Test

Chemistry Test

Assessment

Flashcard

Science

8th Grade

Hard

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16 questions

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1.

FLASHCARD QUESTION

Front

What is the total number of atoms in H₂SO₄?

Back

7

2.

FLASHCARD QUESTION

Front

Which of the following is NOT evidence that a chemical reaction has occurred? (produces light/heat, production of a gas, formation of a precipitate, melting)

Back

melting

3.

FLASHCARD QUESTION

Front

What property of matter is demonstrated when a metal is hammered into a thin sheet?

Back

Malleability

4.

FLASHCARD QUESTION

Front

What is a sign of a chemical change? (Change in shape, Change in temperature, Change in size, Change in texture)

Back

Change in temperature

5.

FLASHCARD QUESTION

Front

What is the smallest unit of structure in an element that gives its identity?

Back

atom

6.

FLASHCARD QUESTION

Front

Define a chemical reaction.

Back

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

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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