Atomic Structure

What is the atomic number?

• the number of protons in the nucleus

• the number of protons and neutrons in the nucleus

• the number of neutrons in the nucleus

• the number of protons in the energy levels

What is the mass number?

• the number of protons in the nucleus

• the number of protons and neutrons in the nucleus

• the number of neutrons in the nucleus

• the number of protons and electrons in the atom

What is the atomic number of this atom?

• 1

• 3

• 4

• 7

Tags

NGSS.MS-PS1-1

What is the mass number of this atom?

• 1

• 3

• 4

• 7

Tags

NGSS.MS-PS1-1

Most of the mass in an atom is made up of _____________________?

• protons and electrons
• protons and neutrons
• neutrons and electrons
• electrons and quarks

Tags

NGSS.MS-PS1-1

What does the 6 represent?

• Atomic mass

• atomic number

• chemical symbol

• element name

Tags

NGSS.MS-PS1-1

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

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

If an atom has 12 positively charged subatomic particles, which of the following must it also have to be considered a neutral atom?

• 12 neutrons
• 12 electrons
• 12 protons
• 24 protons and neutrons

Tags

NGSS.MS-PS1-1

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

Tags

NGSS.MS-PS1-1