structure of atom

Subatomic particles with a negative charge

• Electrons

• Neutrons

• Protons

• Quarks

Value representing the number of protons in an element

• Atomic Number

• Valence Electrons

• Mass Number

. 

Subatomic particles that are neutral in charge

• Nucleus 

• Electrons

• Protons

• Neutrons

The only element with no neutrons in its nucleus.

• Lithium

• Hydrogen

• Helium 

• Oxygen

All matter is made of 

• energy 

• atoms 

• air

• chemistry

True or False - Protons and Neutrons have about the same mass.

• True - They have about the same mass

• False - They do not have about the same mass

Where are the Electrons found in the structure of an atom?

• In the nucleus

• In spaces around the nucleus

What is the mass number?

• the number of neutrons

• the number of protons and electrons

• the number of protons

• the number of protons and neutrons

 

What is the atomic number of this atom?

• 4

• 7

• 1

• 3

a pure form of matter that cannot be broken into other elements.

• Atomic Number

• Mass Number

• Element