Diversity - Chemical properties

Which of the following are examples of element(s)?

• Carbon dioxide

• Nitrogen

• Silver

• Copper

Elements can be classified in the Periodic Table

• by metals and non-metals

• by their appearance

• by chemical properties

• by physical properties

Elements in the same column are in the same group. They have similar chemical properties.

• True

• False

Elements in the same row are in the same period. They change from metallic properties (left) to non-metallic properties (right).

• True

• False

Which of the following is/are compounds?

• Water

• Oxygen

• Sugar

• Nitrogen dioxide

A mixture consist of two or more pure substances which are chemically combined together.

• True

• False

A ________________ is the substance that dissolves in a solvent.

• solution

• residue

• filtrate

• solute

A suspension is a mixture in which __________________ substances are suspended in a liquid or gas.

• transparent

• soluble

• translucent

• insoluble

The following are examples of suspensions:

• Antibiotics

• Salt water

• Orange juice with pulps

• Correction fluid

The following factors affect the solubility of a solute in a solvent except:

• Temperature

• Type of solute

• Type of solvent

• Surface area/ particle size