PBS

Tick TWO elements found in the Earth's crust

• Bauxite

• Gold

• Silver

• Hematite

Tags

NGSS.MS-ESS3-1

The diagram shows galena mineral. Tick the elements found in galena

• Iron

• Lead

• Oxygen

• Sulphur

Tags

NGSS.MS-PS1-1

The diagram shows bauxite mineral. Tick the elements found in bauxite.

• Aluminium

• Lead

• Oxygen

• Carbon

Tags

NGSS.MS-ESS3-1

NGSS.MS-PS1-1

This mineral contains of elements calcium, carbon, and oxygen. What is the common name of this mineral?

• Pyrite

• Cassiterite

• Calcite

• Quartz

Tags

NGSS.MS-PS1-1

Dilute hydrochloric acid is poured into calcium carbonate inside a boiling tube as shown in the diagram. What are produced after the reaction? Tick the correct answers.

• Calcium oxide

• Carbon dioxide

• Water

• Calcium chloride

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

After calcium carbonate is heated, a gas passes through the delivery tube to the limewater. The limewater turns milky as shown in the diagram. Name the gas produced.

Tags

NGSS.MS-PS1-2

Calcium carbonate will be changed to another compound after being heated. Name the new compound produced.

• Calcium chloride

• Calcium oxide

• Calcium hydroxide

• Calcium sulfate