Chapter 17

Chapter 17

Multiple Choice

Bohr discovered that electrons are located in

• the nucleus

• inside protons

• electron cloud

• circular orbits around the nucleus

Multiple Choice

What is the atomic mass of this atom?

• 1

• 3

• 4

• 7

Multiple Choice

What is the atomic number?

• the number of protons

• the number of protons and neutrons combined

• the number of neutrons

• the number of protons and electrons combined

Multiple Choice

What is the atomic number of Nickel? (enlarge the periodic table)

• 110
• 28
• 46
• 78

Multiple Choice

How many protons are in a sodium atom? (tap to enlarge the periodic table)

• Sodium has 1 proton.
• Sodium has 3 protons.
• Sodium has 11 protons

Multiple Choice

What is the atomic number of Barium? (enlarge the periodic table)

• 20
• 38
• 56
• 88

Multiple Choice

An element has the mass number 12 and atomic number  6. The number of neutrons in it is:

• 6
• 10
• 4
• 8

Multiple Choice

If an atom has 10 electrons, how many protons does it have?

• 0
• 1
• 10
• 5

Multiple Choice

How many electrons are in an atom with an atomic number of 50?

• 5
• 8
• 50
• 2

Multiple Choice

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

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

Multiple Choice

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

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

Multiple Choice

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

• 11
• 5
• 6
• 16

Multiple Choice

Most of the mass of an atom is contained here.

• electron orbitals 
• nucleus
• shells
• atomic #

Multiple Choice

An atom of argon has 18 protons and 22 neutrons. How many electrons does it have?

• 18
• 22
• 40
• 4

Multiple Choice

What element has 20 protons? (Use your periodic table.)

• Potassium (K)
• Calcium (Ca)
• Nitrogen (N)
• Neon (Ne)

Multiple Choice

What element has 16 protons? (Use your periodic table.)

• Oxygen (O)
• Sulfur (S)
• Phosphorus (P)
• Boron (B)

Multiple Choice

Which subatomic particle has a negative charge in the atom?

• proton

• neutron

• electron

• quark

Multiple Choice

Oxygen has 8 protons. What is oxygen's atomic number?

• 16
• 8
• 15.999
• 0

Multiple Choice

What is the atomic number of this atom?

• 2
• 4
• 6
• none of the above

Multiple Choice

What is the atomic mass for nickel?

• 58.693

• 28

• 30.693

• 86.693

Multiple Choice

If the atomic mass is not given, how do we calculate it?

• (protons) + (electrons)

• (atomic mass) - (atomic number)

• (protons) - (neutrons)

• (protons) + (neutrons)

Open Ended

How do you think using abbreviations or nicknames can help in scientific communication?

Multiple Choice

Why do scientists use abbreviations or shorthand for long, complicated names?

• To make communication easier and faster

• To confuse others

• Because they forget the full names

• Because it is required by law