Atoms & Mixtures

All matter is made of...

• energy

• atoms

• electrons

• compounds

The positive particles of an atom are...

• electrons

• positrons

• neutrons

• protons

The central region of an atom where its neutrons and protons are is the...

• nucleus

• electron cloud

• core

• center

Particles in an atom that are neutral and have no charge are the...

• negatrons

• electrons

• neutrons

• protons

A particle that moves around the nucleus is a(n)...

• Proton
• Neutron
• Electron
• Quark

Tags

NGSS.MS-PS1-1

Most of the mass of an atom is found in the ______.

• nucleus

• proton

• electron cloud

• isotope

The smallest particle of any particular type of matter is the...

• Compound

• Atom

• Chemical

• Element

The subatomic particle with a negative charge is the...

• electron

• proton

• neutron

• nucleus

What is the atomic number?

• the number of protons in the nucleus

• the number of protons and neutrons

• the number of neutrons

• the number of protons and electrons

Which TWO of the following subatomic particles are inside the nucleus?

• protons

• electrons

• neutrons

• There are no subatomic particles in the nucleus of an atom.