How many subatomic particles (parts) of an atom?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1

Which parts of the atom are in the nucleus?

• Electron

• Proton

• Neutron

• Skyon

Atoms have the same number of (a)   ​ (b)   ​ (c)   .

• drop down
• Neutrons
• Protons
• Electrons

The Atomic Number tells us the number of _____ and ____ in atom.

He letter in the element box on the periodic table is ______.

• The element symbol

• The element name

The number under the element symbol represents the (a)   plus ​ (b)  

• number of protons
• number of neutrons
• number of electrons

​ (a)   has a negative charge.

• Electrons
• Protons
• Neutrons

The first shell can hold up to _______ electrons.

• 2

• 8

• 18

The second shell can hold up to ____________ electrons.

• 18

• 2

• 8

The third shell can hold up to ______ electrons.

• 8

• 18

• 2