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WorksheetsPart 3 Hard Chemistry To Learn - Chemistry Edexcel IGCSE
Total questions: 37
Worksheet time: 30mins
An electrostatic attraction between two nuclei and a shared pair of electrons
(a)
A substance that is made of only one type of atom and cannot be broken down into other substances
(a)
Atoms with different numbers of neutrons but the same numbers of protons and electrons
(a)
How many particles does one mole of a substance contain?
(a)
The simplest whole number ratio of the atoms of each element present in one molecule or formula unit of a compound
(a)
Shows the actual number of atoms in the compound
(a)
Select the boxes that refer to solids
Strong forces of attraction
Regular lattice formation
Particles close together
Particles vibrate in fixed positions
Random arrangement
Select the boxes that refer to solids
Do not flow
Maintains a definite shape and volume
Expands when heated
Least energy
Particles constantly move with random motion
Select the boxes that refer to liquids
Weak forces of attraction
Random arrangement
Particles free to move past each-other
Particles stick closely together
Very weak forces of attraction
Select the boxes that refer to liquids
Definate volume
No definite shape
Flows to fill base of container
Regular lattice formation
Strong forces of attraction
Select the boxes that refer to liquids
Constantly moving with random motion
Expands when heated
Moderate energy
Most energy
Flows to fill any container
Select the boxes that refer to gases
Very weak forces of attraction
Particles free to move
Particles far apart
Random arrangement
Flows to fill the base of a container
Select the boxes that refer to gases
Particles always travel in a straight line
No definite shape or volume
Flows to fill any container
Least energy
No definite shape, but a definite volume
Select the boxes that refer to gases
Particles move constantly with random motion
Expands/
increases in pressure when heated
Most energy
Particles vibrate in fixed position
Particles move in curves according to the Doppler affect
Select the three true statements about changes of state
Physical
Emotional
Reversable
Mass is conserved
Irreversable
What do the forces of attraction between particles depend on?
Material
Temperature
Pressure
Particle movement
Speed
The larger the mass of the particles...
The slower the diffusion rate
The faster the diffusion rate
Separates an insoluble solid from a liquid
(a)
Separates a soluble solid from a solution
(a)
Separates out solutions
(a)
Separates out a mixture of liquids with different boiling points
(a)
Separates several soluble solids from a mixture
(a)
How many spots will pure substances produce on a chromatogram?
1
2
3
4
What piece of equipment is essential to fractional distillation?
(a)
What is the relative mass of an electron?
(a)
May react with acids
Metals
Non-metals
Do not react with acids
Metals
Non-metals
Flaky and brittle
Metals
Non-metals
Low melting and boiling points
Metals
Non-metals
More electron shells lead to:
more shielding
Weaker attraction to positive nucleus
Less shielding
Stronger attraction to positive nucleus
Select the properties of noble gases
Non-metals
Diatomic
Colourless
Form coloured compounds
Monotomic
Select the properties of noble gases
Non-flammable
Flammable
Gas at room temperature
Metals
Select the properties of transition metals
Coloured compounds
Colourless
Variable charges
Strong
Non-flammable
Select the properties of transition metals
Less reactive than group 1
More reactive than group 1
Hard
Dense
Soft
One mole of any element is:
(a)
Why do reactions never produce a 100% yield?
Waste
Reversible reaction
Side reactions
Incomplete reactions
It may be difficult to separate the product from the reaction mixture
Water trapped in the ionic lattice of a salt
(a)
