C1 - Atomic Structure Know It

How many different elements are on the Periodic Table of Elements

• 12

• 36

• 100

• Over 300

Oxygen has 8 protons and 8 neutrons. What is its atomic mass?

• 4

• 8

• 16

• 32

Oxygen has 8 protons and 8 neutrons. What is its atomic number?

• 4

• 8

• 16

• 32

An atom of Lithium (Li) has 3 protons. That means it must have 3 electrons.

• True

• False

Sodium (Na) reacts with Chlorine (Cl). What compound will it make?

• Sodium hydroxide

• Sodium and Chlorine

• Sodium chloride

• Chlorium sodide

Aluminium chloride (Al₂Cl₃) is an element.

• True

• False

Potassium bromide (KBr) is a compound.

• True

• False

An element is made of only one type of _________.

• electron

• atom

• person

• compound

Group 1 elements are very unreactive.

• True

• False

Which of these is not a separation method of mixtures?

• Distillation

• Filtration

• Chromatography

• Mixing