Bohr Diagrams

What is the mass number of this atom?

• 1

• 3

• 4

• 7

Tags

NGSS.MS-PS1-1

How many electrons does a potassium atom have?

• 19

• 39

• 20

• 40

Tags

NGSS.MS-PS1-1

What group does this element belong to?

• Group 1: Alkali metals
• Group 18: Noble Gases
• Group 2: Alkaline-Earth Metals
• Group 17: Halogens

Tags

NGSS.HS-PS1-1

What is the charge of a neutron?

• Positive

• Negative

• Neutral

What is the centre of the atom called?

• Shell

• Nucleus

• Proton

• Positive space

Tags

NGSS.MS-PS1-1

What are valence electrons?

• electrons in the nucleus

• electrons in the outermost shell

• the atomic number

• electrons in the first shell

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Identify the element in the picture

• Boron
• Carbon
• Nitrogen
• Lithium

Tags

NGSS.MS-PS1-1

If this element had 15 neutrons, it would have a mass of:

• 17

• 15

• 32

• Not enough information provided

Tags

NGSS.MS-PS1-1

Which row of the Periodic Table must this element come from?

• 1

• 2

• 3

• 4

Tags

NGSS.HS-PS1-1

What group is this element in?

• 2

• 6

• 8

• 16

Tags

NGSS.MS-PS1-1