Yr10 Chem Revision

What is the element symbol for lithium?

• li

• LI

• Li

• lI

How many protons does Sodium (Na) have?

• 3

• 11

• 5

• 1

What information does the mass number give us?

• The number of protons

• The number of neutrons

• The numbers of electrons

• The number of protons+neutrons

What is a cation?

• A positive ion

• A negative ion

• Any ion

• An atom

What is the charge of a sodium ion?

• +1

• -1

• +2

• -2

What is the charge of a oxygen ion?

• +2

• -2

• +3

• -3

An ionic compound forms between

• A metal and a non-metal

• An atom and an ion

• A cation and an anion

• Two compounds

Sodium and oxygen form an ionic compound. What is the formula for this compound?

• NaO

• Na₂O

• NaO₂

• Na₂O₂

What is the name of this ionic compound?

• Sulfide magnesium

• Magnesium sulfur

• Magnesium sulfide

• Magnesium sulfate

How many aluminium atoms are represented by this ionic formula?

• 8

• 2

• 12

• 20