EL#04 Chemical Reactions Review

EL#04 Chemical Reactions Review

Assessment

Flashcard

Science

8th Grade

Hard

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15 questions

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1.

FLASHCARD QUESTION

Front

What does the law of conservation of mass state?

Back

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction; the total mass of the reactants equals the total mass of the products.

2.

FLASHCARD QUESTION

Front

What is a decomposition reaction?

Back

A decomposition reaction is a type of chemical reaction where a single compound breaks down into two or more simpler products.

3.

FLASHCARD QUESTION

Front

What is the chemical formula for the ionic bond formed between potassium and iodine?

Back

The chemical formula for the ionic bond formed between potassium and iodine is KI.

4.

FLASHCARD QUESTION

Front

How can you determine if a chemical equation is balanced?

Back

A chemical equation is balanced if the number of atoms of each element is the same on both sides of the equation.

5.

FLASHCARD QUESTION

Front

What is an example of a chemical change?

Back

Frying an egg is an example of a chemical change because it involves a change in the chemical composition of the egg.

6.

FLASHCARD QUESTION

Front

What are some signs that a chemical reaction has occurred?

Back

Signs that a chemical reaction has occurred include a change in color, temperature, formation of a precipitate, or gas production.

7.

FLASHCARD QUESTION

Front

What is a precipitate?

Back

A precipitate is a solid that forms and settles out of a liquid mixture during a chemical reaction.

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