Ionic Compounds

The electrons that form chemical bonds are

• valence eletrons

• core electrons

• lone pairs of electrons

• protons

Nonmetals tend to 

• gain electrons
• lose electrons

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

If I gain electrons I become

• Positive because I've added to my atom
• negative because I've added electrons
• same because i'm balanced
• equal because now I have electrons

Tags

NGSS.HS-PS1-1

How do the following two elements bond together?
Cr³⁺  O^2-         

• CrO
• Cr₃O₂
• Cr₂O₃
• CrO₃

Tags

NGSS.MS-PS1-1

When a nonmetal gains electrons, it becomes this type of ion.

• Anion
• Cation

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which of the following combinations would need roman numerals in the name?

• potassium + fluorine
• beryllium + oxygen
• boron + iodine
• silver + oxygen

How many valence electrons does a bromine atom have?

• 1
• 2
• 6
• 7

Tags

NGSS.HS-PS1-1

Which of the following is NOT an ionic compound:

• CaO
• NaOH
• BaCl₂
• Br₂

Tags

NGSS.HS-PS1-3

What is the correct formula for the compound, lithium oxide?

• LiO
• Li₂O
• LiO₂
• Li₂O₂

Tags

NGSS.HS-PS1-2

What is the formula for calcium carbonate?

• CaCO
• CaCO₂
• CaCO3
• Ca3CO3

Tags

NGSS.MS-PS1-1