Physical Science Midterm Review 2024

How many valence electrons does a halogen have? 

• 1
• 2
• 7
• 8

Tags

NGSS.HS-PS1-1

How many valence electrons does an alkaline earth metal have? 

• 1
• 2
• 7
• 8

Tags

NGSS.HS-PS1-1

Ions are ________

• atoms with an electric charge

• atoms with different number of protons

• atoms with different number of neutrons

Tags

NGSS.HS-PS1-7

Which of the following ions have a +1 charge?

• Hydrogen (H)

• Helium (He)

• Calcium (Ca)

• Lithium (Li)

Which of the following ions have a +2 charge?

• Hydrogen (H)

• Magnesium (Mg)

• Calcium (Ca)

• Lithium (Li)

Which of the following ions have a -2 charge?

• Oxygen (O)

• Magnesium (Mg)

• Fluorine (F)

• Sulfur (S)

Which of the following ions have a +3 charge?

• Boron (B)

• Aluminum (Al)

• Calcium (Ca)

• Lithium (Li)

Which of the following ions have a -3 charge?

• Nitrogen (N)

• Aluminum (Al)

• Phosphorous (P)

• Sulfur (S)

A cation has a ________ charge because it _________ electrons.

• Negative, Gains

• Negative, Loses

• Positive, Gains

• Positive, Loses

An anion has a __________ charge, because it __________ electrons.

• Positive, Gains

• Positive, Loses

• Negative, Gains

• Negative, Loses