Oquizy

What is the number of neutrons in ³⁷₁₇Cl?

17 20 37 54

Which statement explains why solids have a fixed shape?

Their particles are chemically bonded Their particles are far apart Their particles can only vibrate in fixed positions Their particles move freely in all directions

A gas jar containing bromine vapour is placed above a jar of air. After some time, John sees the brown colour spreads downward. What explains this?

Bromine diffuses due to particle attraction Bromine dissolves into air due to heat Bromine particles are heavier, so they sink Bromine particles diffuse randomly into the air

Water and ethanol are both liquids. John wonders why does ethanol evaporate faster?

Ethanol has weaker intermolecular forces Ethanol is denser than water Smaller particles bounce around more Water has a lower boiling point

What does the atomic number of an atom represent?

Number of electrons Number of neutrons Number of nucleons Number of protons

Which gas diffuses the fastest at room temperature?

Ammonia Carbon dioxide Chlorine Oxygen

Quiz: Chemistry - The Particulate Nature Of Matter