The Atom

A particle that moves around the nucleus of an atom is an _______.

• Proton

• Neutron

• Electron

• Quark

Tags

NGSS.MS-PS1-1

Particles in an atom that are neutral which means they have no charge are _____.

• negatrons

• electrons

• neutrons

• protons

The positive particles of an atom are called _____.

• electrons

• positrons

• neutrons

• protons

Tags

NGSS.MS-PS1-1

All matter is made of ______.

• energy

• atoms

• electrons

• compounds

Tags

NGSS.MS-PS1-1

What does the nucleus of an atom contain?

• Electrons and neutrons
• Protons and neutrons
• Neutrinos and positrons
• DNA and RN

Tags

NGSS.MS-PS1-1

In terms of matter, the atom is almost entirely filled with _____

• orbiting electrons
• charged protons
• heavy neutrons
• empty space

Tags

NGSS.MS-PS1-1

Of the three subatomic particles, which is the smallest and the lightest?

• protons 
• neutrons
• electrons
• They are all equal.

An atom has an atomic number of 15 and a mass number that rounds to 31. How many protons are there in the atom?

• 15

• 31

• 16

• 47

Tags

NGSS.MS-PS1-1

How many Protons are in one atom of Lithium?

• 3
• 6
• 7
• 6.941

Tags

NGSS.MS-PS1-1

An atom has 5 protons and 7 neutrons. What is the mass number of the atom?

• 5
• 7
• 2
• 12

Tags

NGSS.MS-PS1-1