Chemistry Review

Front

What is a physical property?

Back

A characteristic of a substance that can be observed or measured without changing its identity, such as melting point or boiling point.

Front

What is a mixture?

Back

A combination of two or more substances that are not chemically bonded, such as saltwater.

Front

What is a compound?

Back

A substance formed when two or more elements are chemically bonded together, such as water (H2O).

Tags

NGSS.MS-PS1-1

Front

How many electrons can fit in the first shell of an atom?

Back

2 electrons.

Front

What is atomic mass?

Back

The sum of an atom's protons and neutrons.

Front

What is the chemical formula for water?

Back

H2O, which indicates it has 2 hydrogen atoms and 1 oxygen atom.

Tags

NGSS.MS-PS1-1

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of only one type of atom, while a compound is made of two or more different types of atoms chemically bonded.

Front

What is the atomic number?

Back

The number of protons in the nucleus of an atom, which determines the element's identity.

Front

What is a chemical change?

Back

A change that results in the formation of new chemical substances, such as rusting iron.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is the boiling point of water?

Back

100°C at standard atmospheric pressure.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4