Font size
WorksheetsHigher Chemistry: Unit 1 (Chemical Changes & Structure)
Total questions: 16
Worksheet time: 14mins
An experiment was repeated at two different temperatures. The red line represents experiment A and the Blue line represents experiment B. Which experiment was done at the higher temperature?
Experiment B (Blue line)
Both are the same temperature
Experiment A (red line)
What is the minimum amount of energy required for a reaction to take place?
(a)
Look at the diagram. Is the reaction Exothermic or Endothermic?
Exothermic
Endothermic
Calculate the enthalpy change for the forward reaction.
(a)
Show on the diagram the effect of a catalyst being added
What is the relative rate of reaction for a reaction that took 40 seconds to complete? (units not required)
(a)
What are the correct units for relative rate of reaction?
mol/L
mol/s
s−1
s-1
Does electronegativity increase or decrease along a period of the periodic table?
Increase
Decrease
Stay the same
Why does electronegativity decrease down a group?
(a)
What state must an element be in to find it's correct first ionization energy?
(a)
State why Krypton has no electronegativity value
(a)
What form of carbon is shown in the image?
diamond
graphite
graphene
fullerene
Which form of bonding will give the highest boiling points?
Ionic
Metallic
Covalent Molecular
Covalent Network
Is this ammonia structure polar or non-polar?
Polar
Non-polar
What type of intermolecular (van der Waals) forces are present between molecules of ammonia NH3
London Dispersion Forces
Dipole-dipole Interaction
Hydrogen Bonding
Dipole-Induced dipole
What is the strongest intermolecular (van der Waals) force?
London Dispersion Forces
Dipole-dipole Interactions
Hydrogen Bonding
Dipole-Induced dipole
