Ionic/Covalent Compounds

An ionic bond is the attraction between:

• oppositely charged ions
• similarly charged ions
• neutral ions
• neutral atoms

Tags

NGSS.HS-PS2-4

In the chemical formula for an ionic compound, which item is written first?

• positive ion
• negative ion
• subscript
• the female

Which two elements could form an ionic compound?

• #6 carbon and #8 oxygen
• #1 hydrogen and #7 nitrogen
• #3 lithium and #9 fluorine
• #5 boron and #10 neon

Tags

NGSS.HS-PS1-3

CaO 

• Calcium monoxide
• Monocalcium monoxide
• Calcium oxide

Ionic bonds form only between atoms of nonmetals.

• True
• False

When an atom of iodine becomes an ion, it is named iodide.

• True
• False

Which of the following compounds is not an ionic compound?

• barium oxide
• lithium oxide
• carbon dixoide
• calcium chloride

Which statement about energy and ionic bonds is true?

• It takes energy to form a negative ion.
• Halogens need the most energy to become ions.
• It takes energy to remove valence electrons from an atom.
• It takes more energy to gain two electrons than one.

Tags

NGSS.HS-PS1-4

Covalent bonds form between what types of elements? 

• Metal to Nonmetal
• Nonmetal to Nonmetal
• Metal to Metal

Which Compound would be classified as a covalent bond? 

• CaCl₂
• P₂O₅
• KI
• MgO