How many electrons should Hydrogen have around its electron dot diagram?

• 1

• 2

• 7

• 8

Tags

NGSS.MS-PS1-1

What is at the center of every atom?

• an electron

• a compound

• a molecule

• a nucleus

Tags

NGSS.MS-PS1-1

What's a valence electron?

• electrons in the second energy level
• electrons in the outermost energy level
• the atomic number
• electrons in the first level

Tags

NGSS.MS-PS1-1

How many dots would the electron dot diagram of Helium have?

• 1

• 2

• 8

• 0

Tags

NGSS.MS-PS1-1

This is a correct electron dot diagram for nitrogen (N)

• true

• false

Tags

NGSS.MS-PS1-1

What is the atomic mass of Neon?

• 10

• 20.18

• 10.18

• 30.18

How many protons are in Beryllium?

• 4
• 9
• 5
• 2

Tags

NGSS.MS-PS1-1

How many neutrons are in a Gold atom?

• 79
• 196
• 118
• 275

Tags

NGSS.MS-PS1-1

What element is represented in this model?

• Carbon

• Hydrogen

• Aluminum

• Lithium

Tags

NGSS.MS-PS1-1

What's a valence electron?

• electrons in the second energy level
• electrons in the outermost energy level
• the atomic number
• electrons in the first level

Tags

NGSS.MS-PS1-1