Unit 5: Quiz 1

Match the following

• 1 AMU, Positive charge

• Proton

• 1 AMU, No Charge

• Electron

• 1/2000 AMU, Negative Charge

• Neutron

Most of the mass of an atom comes from the ​ (a)  

• nucleus
• Only protons
• Only Neutrons
• Electron cloud

Neutrons + Protons = _________

• Atomic Number

• Atomic Mass

• Electrons

• Element

How many neutrons does Boron have?

• 5

• 6

• 10

• 11

Match the following.

• Positive (+)

• Neutron

• Neutral (0)

• Electron

• Negative (-)

• Proton

Which two subatomic particles make up the nucleus of an atom?

• Protons and Electrons

• Protons and Neutrons

• Molecules and Compounds

• Neutrons and Electrons

Which of the following determines the type of element that an atom makes?

• The size of the nucleus.
• The number of protons.
• How much the atom weighs.
• The number of neutrons.

In a neutral atom,

• protons = electrons

• protons = neutrons

• neutrons = electrons

• atomic number = protons

In the modern periodic table elements are arranged by:

• atomic mass
• atomic number
• valence electrons
• number of isotopes

The region inside an atom where electrons are likely to be found

• Proton

• Atom

• Cloud

• Neutron