Matter Unit Earth Science

Front

What is the number of protons in an atom equal to?

Back

The number of electrons.

Front

What two particles determine the mass number of an atom?

Back

Protons and neutrons.

Front

What is formed when one substance is dissolved in another substance?

Back

A solution.

Front

What are isotopes?

Back

Elements with a different amount of neutrons.

Tags

NGSS.HS-PS1-8

Front

What is the atomic number of an atom?

Back

The number of protons in the nucleus.

Front

What is a solute?

Back

The substance that is dissolved in a solution.

Front

What is a solvent?

Back

The substance in which the solute is dissolved.

Front

What is the difference between an element and a compound?

Back

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

Front

What is the significance of the atomic mass unit (amu)?

Back

It is a standard unit of mass that quantifies mass on an atomic or molecular scale.

Tags

NGSS.MS-PS1-5

Front

What is the role of electrons in an atom?

Back

Electrons are negatively charged particles that orbit the nucleus and are involved in chemical bonding.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2