Q2 exam review day 2

• 2
• 8
• 3
• 13

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

• 2
• 3
• 5

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

USE THE PERIODIC TABLE

How many valence electrons does sodium have?

• 1

• 2

• 3

• 4

Tags

NGSS.HS-PS1-1

USE THE PERIODIC TABLE

How many valence electrons does Phosphorus have?

• 31

• 5

• 15

• 4

Tags

NGSS.HS-PS1-1

How many valence electrons are found in atoms of group 14?

• 4
• 3
• 14
• 16

Tags

NGSS.HS-PS1-1

Which elements have the most similar chemical properties?

• boron and carbon

• oxygen and sulfur

• aluminum and bromine

• argon and silicon

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Valence electrons are: 

• Electrons farthest away from the nucleus
• Electrons closest to the nucleus
• Electrons that just come and go - they don't stay with the atom
• Electrons in the second shell

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is the electron configuration of sodium?

• 2.8
• 2.8.2
• 2.8.1
• 11

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is the electron configuration of calcium?

• 2.8.8.2
• 2.8.10
• 20
• 2.18.2

Tags

NGSS.HS-PS1-1

Which element has an electron configuration of 2.5?

• Oxygen
• Nitrogen
• Phosphorus
• Carbon

Tags

NGSS.HS-PS1-1