Drop & Give Me 20 (Q4/W3)

The three main subatomic particles are electrons, protons and ____________.

• photons
• neurons
• neutrons
• quarks

The atomic number represents the identity of the ________________.

• mass of the atom
• element
• electrons
• isotopes

The proton number of an atom is equal to the _________________ of the atom.

• mass number
• atomic mass number
• atomic number
• neutron number

The total number of protons and neutrons in an atom represent the __________________ of an atom.

• mass number
• atomic mass number
• isotopes
• electron cloud

How many Protons are in one atom of Lithium?

• 3
• 4
• 6.941
• 7

How many Electrons are in one atom of Lithium?

• 3
• 4
• 6.941
• 7

How many Neutrons are in one atom of Li-7?

• 3
• 4
• 6.941
• 7

What determines the order of elements on today's periodic table?

• Increasing atomic mass
• Decreasing atomic number
• Increasing atomic number
• Decreasing atomic mass

All matter is made of what?

• compounds
• atoms 
• electrons 

Vertical (up and down) columns in the periodic table are called _________ of elements and have similar properties. 

• groups
• periods