S4 Chem Quiz on 13 April

Which property is not considered a typical metallic property?

• good conductor of heat

• low melting point

• malleable (can be hammered into shape)

• strong

Metals consist of a lattice of positive ions in a 'sea of electrons'.

• True

• False

Why is aluminium malleable?

• Its ions repel each other.

• Its ions are tightly packed together.

• Its ions are attracted to the 'sea of electrons'.

• Its layers of ions can slide over each other.

• a macromolecule

• a covalent compound

• a metal

• an ionic compound

• A

• B

• C

• D

A student is asked to measure the time taken for 0.4 g of magnesium carbonate to react completely with 25.0 cm³ of dilute hydrochloric acid.

Which piece of apparatus does the student need?

• balance, stop-clock and pipette

• balance, stop-clock and thermometer

• balance, pipette, thermometer

• stop-clock, pipette, thermometer

• 0.60

• 0.64

• 0.69

• 0.72

• They have different number of neutrons.

• They have different mass numbers.

• They have the same number of protons.

• They have the same number of outer shell electrons.