S9 - 2nd PT Review

Ions that are made of more than one atom are called...

• ionic compounds
• crystals
• polyatomic ions

• ionic bonds

Which is most likely to form a negative ion...

• an element from Group 7

• a metal
• an element from Group 1
• an element with atoms that have eight valence electrons

When an atom loses a valence electron, it becomes a(n) _________ion.

• positive 
• negative

Why do ionic bonds form?

• so the number of protons equals the number of electrons

• to fill the outermost energy level to make the atom stable

• so an atom can become unstable

If an aluminum atom has 13 protons (+) and 10 electrons (-), what is it's charge?

• Al⁺³

• Al⁺¹³

• Al⁺¹⁰

• Al^-10

if NONMETALS are more likely to GAIN electrons, they will form ...

• anions

• neutral atoms

• cations

Elements in Group 1 lose one electron to form ions with a _________________ charge.

• 1+
• 2+
• 0
• 1-

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

• positive ion (cation)

• negative ion (anion)

• subscript

• it's alphabetical

What element always has an oxidation number of +1?

• Hydrogen
• Fluorine
• Chlorine
• Iodine

The transfer of Valence electrons from a metal to a non metal is known as

• Covalent Bonding

• Metallic bonding

• Molecular bonding

• Ionic Bonding