Chemical Changes Review

Chemical Changes Review

Assessment

Flashcard

Science

6th Grade

Hard

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15 questions

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1.

FLASHCARD QUESTION

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means. Examples include gold (Au), oxygen (O), and silver (Ag).

2.

FLASHCARD QUESTION

Front

What is a compound?

Back

A compound is a substance formed when two or more elements are chemically bonded together. An example is water (H2O), which is made of hydrogen and oxygen.

3.

FLASHCARD QUESTION

Front

What is a chemical change?

Back

A chemical change is a process where one or more substances are transformed into different substances with new properties. Examples include rusting iron and burning wood.

4.

FLASHCARD QUESTION

Front

What are some indicators of a chemical change?

Back

Indicators of a chemical change include a change in color, the formation of a gas (bubbling or fizzing), the formation of a precipitate (solid), and a change in temperature.

5.

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 ice and dissolving sugar in water.

6.

FLASHCARD QUESTION

Front

What happens during a chemical reaction?

Back

During a chemical reaction, reactants are transformed into products, which have different properties than the reactants.

7.

FLASHCARD QUESTION

Front

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

Back

A physical change does not change the chemical composition of a substance, while a chemical change results in the formation of new substances.

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