Chemistry Review 2024

Chemistry Review 2024

Assessment

Flashcard

Science

6th - 8th Grade

Hard

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15 questions

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1.

FLASHCARD QUESTION

Front

What is evidence of a chemical reaction?

Back

Evidence of a chemical reaction includes changes such as color change, gas production, or formation of a precipitate. An example is burned sugar turning brown then black.

2.

FLASHCARD QUESTION

Front

What is the definition of 'products' in a chemical reaction?

Back

Products are the substances produced in a chemical reaction.

3.

FLASHCARD QUESTION

Front

Why is graphite soft?

Back

Graphite is soft because its atoms are arranged in a layered structure, allowing them to slide over each other easily.

4.

FLASHCARD QUESTION

Front

What are mixtures?

Back

Mixtures are different materials placed together but NOT chemically bonded.

5.

FLASHCARD QUESTION

Front

How are elements and compounds related?

Back

Elements are pure substances made of one type of atom, while compounds are made of at least two types of atoms bonded together.

6.

FLASHCARD QUESTION

Front

What is a chemical reaction?

Back

A chemical reaction is a process where substances (reactants) are transformed into new substances (products) through the breaking and forming of bonds.

7.

FLASHCARD QUESTION

Front

What is the definition of 'reactants'?

Back

Reactants are the starting substances in a chemical reaction that undergo change.

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