Which subatomic particle determines the atomic number of an element?

• Neutron

• Proton

• Electron

• Nucleus

If an atom has 8 protons, 8 neutrons, and 8 electrons, what is its mass number?

• 8

• 16

• 24

• 0

Tags

NGSS.MS-PS1-1

Which statement about electrons is correct?

• They have a positive charge.

• They have no mass.

• They are found in the nucleus.

• They are the same as protons.

Tags

NGSS.MS-PS2-3

What type of matter has a definite volume but an indefinite shape?

• Solid

• Liquid

• Gas

• Plasma

Tags

NGSS.MS-PS1-4

Which state of matter is the most common in the universe?

• Solid

• Liquid

• Gas

• Plasma

Plasma is best described as:

• A solid with a fixed shape

• A gas of ionized particles

• A liquid with no definite volume

• A crystal lattice

Tags

NGSS.MS-PS1-4

What is the most abundant element in the Earth’s crust?

• Iron

• Silicon

• Oxygen

• Aluminum

Which element makes up the majority of the universe?

• Helium

• Hydrogen

• Oxygen

• Carbon

The ocean is composed primarily of:

• Hydrogen and Sodium

• Oxygen and Hydrogen

• Sodium and Chlorine

• Nitrogen and Oxygen

Earth science is best defined as:

• The study of planets outside the solar system

• The study of Earth and the universe around it

• The study of chemistry only

• The study of human history

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-2

NGSS.MS-ESS3-1