Atoms

A subatomic particle with a positive charge is called --

• a proton

• a neutron

• an electron

• a nucleus

A region around the nucleus of an atom where electrons are found.

• Electron Nucleus

• Electron Cloud

• Cloud of Electrons

• Electron

Which subatomic particle(s) are found in the electron cloud of an atom? Choose all that apply.

• proton

• neutron

• electron

How many protons are in Carbon (C)?

• 6

• 12

• 1

• 18

Tags

NGSS.MS-PS1-1

How many electrons does Barium (Ba) have?

• 56

• 81

• 137

• 218

Tags

NGSS.MS-PS1-1

How many neutrons does Sodium (Na) have?

• 11

• 23

• 34

• 12

Tags

NGSS.MS-PS1-1

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

• nucleus 

• electron cloud

• core 

• center 

an atom with atomic number 6 would have how many protons 

• 6

• 12

• 3

• cannot be determined 

Tags

NGSS.MS-PS1-1

All matter is made of what?

• energy 

• atoms 

• electrons 

• compounds 

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

The particles that are found in the nucleus of an atom are

• neutrons and electrons

• electrons only

• protons and neutrons

• protons and electrons