Chemistry Flashcard Review 24

Chemistry Flashcard Review 24

Assessment

Flashcard

Science

7th Grade

Hard

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15 questions

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1.

FLASHCARD QUESTION

Front

What is a molecule?

Back

A molecule is a group of two or more atoms bonded together. It can be made up of the same or different elements.

2.

FLASHCARD QUESTION

Front

What is a compound?

Back

A compound is a substance formed when two or more different elements are chemically bonded together.

3.

FLASHCARD QUESTION

Front

What is the difference between a molecule and a compound?

Back

A molecule can consist of the same type of atoms (like O2), while a compound consists of different types of atoms (like H2O).

4.

FLASHCARD QUESTION

Front

What are physical properties?

Back

Physical properties are characteristics of a substance that can be observed without changing its identity, such as color, odor, and melting point.

5.

FLASHCARD QUESTION

Front

What are chemical properties?

Back

Chemical properties describe how a substance interacts with other substances and how it changes into a different substance.

6.

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. It consists of only one type of atom.

7.

FLASHCARD QUESTION

Front

What is an example of a physical property?

Back

An example of a physical property is the boiling point of water, which is 100°C at sea level.

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