Unit 6: Atomic Structure

What is the charge of a proton?

• Negative

• Positive

• Neutral

What is the charge of a neutron?

• Negative

• Positive

• Neutral

How many protons are in Beryllium?

• 4
• 9
• 5
• 2

What subatomic particles would you find in the nucleus of an atom?

• Protons only
• Protons and Neutrons
• Neutrons and Electrons
• Protons and Electrons 

Which subatomic particles contribute the most to the mass of an atom?

• Protons, Neutrons, Electrons
• Protons only
• Protons and Electrons
• Protons and Neutrons

An atom has 10 protons, 15 neutrons and 10 electrons what is its mass number.

• 20

• 10

• 35

• 25

How many electrons does this atom have?

• 2

• 4

• 6

• 10

The atomic number of an element that has 9 protons, 9 electrons, and 10 neutrons is _____.

• 9
• 10
• 19
• 28

An element with a mass number of 11 and an atomic number of 5 has how many neutrons?

• 11
• 5
• 6
• 16

Where is most of the mass in an atom located?

• in the nucleus
• in the protons
• in the neutrons
• in the electrons