AS-Level States of Matter

Which solid has a giant covalent lattice?

• calcium fluoride

• sulfur

• nickel

• silicon (IV) oxide

For an ideal gas at constant temperature, which diagram shows the correct graph of PV against n?

• A

• B

• C

• D

The table shows the physical properties of four substances.

Which one has a giant ionic structure?

• 1, 2 and 3

• 1 and 2

• 1 and 3

• 3 only

Tags

NGSS.HS-PS1-3

The ideal gas law summarises the gas laws.

PV = nRT

Which statement below is correct?

• Intermolecular forces exist between gas molecules.

• Ideal gas will collide inelastically upon impact with each other.

• One mole of an ideal gas occupies the same volume under the same conditions of temperature and pressure.

• The volume of a given mass of an ideal gas is doubled if its temperature is raised from 20ºC to 50ºC.

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NGSS.HS-PS3-4

Which of the following least resembles an ideal gas at room temperature?

• helium

• ammonia

• carbon dioxide

• hydrogen gas

Which of the following pairs of substances can conduct electricity at the given conditions?

• molten magnesium bromide and graphene

• diamond and fullerenes

• nanotubes and solid sulfur

• solid strontium chloride and graphite

Tags

NGSS.HS-PS1-3

NGSS.HS-PS2-6

NGSS.HS-PS3-5

Which of the following pairs of substances has sp² hybrid orbitals?

• diamond and nanotubes

• graphite and graphene

• silicon (IV) oxide and fullerenes

• diamond and silicon (IV) oxide

Tags

NGSS.HS-PS2-6

Which of the following statements is true for graphite, graphene and fullerenes?

• They are good conductors of heat and electricity.

• Van der Waals forces of attraction holds their structure together.

• They don't have extensive and continuous giant structure.

• They all have strong tensile strength.

Which of the following has a simple molecular lattice?

• sulfur

• bromine

• ammmonia

• carbon dioxide

Tags

NGSS.MS-PS1-1

Why are metals strong but ionic solids are brittle?

• Metals have strong metallic bonding but ionic solids have weak ionic bonds.

• Metals have stronger intermolecular forces than ionic compounds.

• When force is applied, the like-charged ions in ionic solids line up and repel each other.

• The electrostatic attraction between the positive metal ion and sea of delocalised electron is weaker in ionic solids than metals.

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NGSS.HS-PS1-3