Atoms

What is the definition of an atom?

• the smallest particle of matter

• the smallest particle of an element

• the smallest particle of a compound

• the smallest particle of living things

What is the smallest piece of matter that still has properties of that matter?

• element

• atom

• proton

All matter is made of what...

• energy

• atoms

• electrons

• compounds

Tags

NGSS.MS-PS1-1

The positive particles of an atom are

• electrons

• positrons

• neutrons

• protons

Tags

NGSS.MS-PS1-1

The neutrons and protons are contained in its....

• nucleus

• electron cloud

• core

• center

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

• negatrons

• electrons

• neutrons

• protons

Tags

NGSS.MS-PS1-1

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

• Proton
• Neutron
• Electron
• Quark

Tags

NGSS.MS-PS1-1

In the modern periodic table, elements are arranged by:

• atomic mass

• atomic number

• valence electrons

• number of isotopes

What type of charge does an electron have?

• positive

• no charge/neutral

• negative

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

What two sub-atomic particles belong in the nucleus of an atom?

• electrons and protons

• protons and neutrons

• electrons and neutrons

Tags

NGSS.HS-PS1-8