Practise IB Chemistry HL 1.1 with evidence-led questions on particles, elements, compounds, mixtures and kinetic molecular theory.
Iron(II) sulfide can be produced by heating powdered iron and sulfur together.
Describe the difference between an element and a compound.
Alkanes are commonly occurring organic compounds.
The first four straight chain alkanes are gases at room temperature.
Boiling points of straight chain alkanes
Explain why the volume occupied by a sample of propane increases sharply when the sample is heated up from 200 to 250 K at constant pressure.
The same amount of two gases, X and Y, are in two identical containers at the same temperature. What is the difference between the gases?
X has the higher molar mass.
Y has the higher molar mass.
X has the higher average kinetic energy.
Y has the higher average kinetic energy.