End of Semester Chemistry Revision

The name for the ionic compound NaF is

• Sodium fluoride

• Nappium fluoride

• Sodium fluorine

• Fluorine sodiumide

The chemical formula for CaS is

• Cerium sulfide

• Carbon sulfur

• Calcium sulfide

• Calcium sulfur

If a sulfate ion has a charge of 2-, how many sodium ions will combine with one sulfate ion?

• 1

• 2

• 3

• 2.5

An ionic compound is formed between

• Metal anion(s) and non-metal cation(s)

• Two or more metal atoms

• Metal cation(s) and non-metal anion(s)

• Two or more non-metal atoms

A cation is where

• There are more electrons than protons

• Protons and electrons are equal

• The number of electrons are less than the number of protons

Anions are formed from

• Metals giving away electrons

• Non-metals receiving additional electrons

• Non-metals giving away electrons

• Cations losing their charge

The name for the ion O^2- is

• Oxygen anion

• Oxide anion

• Oxygen

• Oxide cation

Name for SrBr₂

• strontium bromine

• strontium bromide

• strontium dibromide

• strontium dibromine

Losing electrons makes an atom more

• of a loser

• positively charged

• forgetful

• than enough

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

• CrO
• Cr₃O₂
• Cr₂O₃
• CrO₃