Diversity by Chemical Composition

Is this statement True or False?
An element contains only one type of particle.

• True

• False

Answer explanation

If a substance contains more than one type of particle, it can be a compound or a mixture.

Is this statement True or False?
An element only has single particles that cannot be joined.

• True

• False

Answer explanation

Some elements have 2 or more particles joined. Here are some examples:

hydrogen is H₂

oxygen is O₂

phosphorus is P₄

Is this statement True or False?
An element cannot be broken down into simpler substances.

• True

• False

Answer explanation

Elements cannot be broken down into simpler substances by chemical methods or physical methods.

Complete the sentences:

Metals are found on the​ (a)   side of the Periodic Table.

Non-metals are found on the ​ (b)   side of the Periodic Table.

• left
• right
• top
• bottom

Refer to the Periodic Table.

Which element is in Group 1, Period 2?

• Beryllium

• Lithium

• Sodium

Refer to the Periodic Table.

Which element is in Group 2, Period 5?

• Barium

• Calcium

• Niobium

• Strontium

Refer to the Periodic Table.

Which element is in Group 16, Period 3?

• Cerium

• Oxygen

• Sulfur

• Selenium

Refer to the Periodic Table.

Silicon has a chemical symbol of Si.

Which group is Silicon in?​ (a)  

Which period is Silicon in?​ (b)  

• 14
• 4
• 3
• 2
• 5

Refer to the Periodic Table.

Iron has a chemical symbol of Fe.

Which group is Iron in?​ (a)  

Which period is Iron in?​ (b)  

• 8
• 4
• 1
• 2
• 3

Refer to the Periodic Table.

Match the elements to their chemical symbols.

• Co

• Nitrogen

• Ni

• Neon

• Ne

• Cobalt

• Cu

• Copper

• N

• Nickel