Which is the correct name for CaBr₂?

• Calcium Bromine
• Bromine Calcium
• Calcium Bromide

What is the name for LiF?

• Lithium Fluoride
• Lithium Fluorine
• Fluorine Lithide

Tags

NGSS.MS-PS1-1

What is the oxidation of C in CH₄?

• -4
• -1
• +4
• +1

What is the oxidation number of O in CO₂?

• +2
• -1
• +4
• -2

The sum of all oxidation numbers in a neutral compound is ___.

• 0
• 1
• -1
• depends on the compound

What element always has an oxidation number of +1?

• Hydrogen
• Fluorine
• Chlorine
• Iodine

Tags

NGSS.HS-PS1-1

Which of the following elements does NOT have an oxidation number of +2?

• Ca
• Sr
• K
• Ba

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many electrons are needed in the outer energy levels of an atom to be stable?

• 2
• 4
• 6
• 8

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

A charged particle that has gained or lost electrons is called a _____.

• molecule
• ion
• isotope
• element

What type of bond is this?

• ionic
• covalent

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2