Worksheets covering all of F321 module 1

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1 Atomic Structure and Isotopes
1.1.1 Atoms
Atomic
structure Complete the table
Particle Relative Charge Relative mass Where is it found
in the atom?
Proton
Neutron
Electron
True or false 99.999999999% of the atom is empty space?
Define
Atomic Number
Mass Number
(d) deduce the numbers of protons, neutrons and electrons in:
(i
Atom Protons Electrons Neutrons
24
Mg
32
S
13
C
7
Li
32 2
S
7 +
Li
What is an Isotope?
Relative Define
masses relative isotopic mass
relative atomic mass
(h) calculate the relative atomic mass of an element given the relative abundances of its isotopes
Calculate the RAM of Antimony if 57% is 121Sb and 43% is 123Sb
Calculate the RAM of Europium if there are only two isotopes 151Eu and 153Eu. The abundance of
151
Eu is 48%
What is the Relative Formula Mass of

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Calcium Carbonate
Ammonium Nitrate
What is the Relative Molecular Mass of
Ammonia
Chloroethane
2 Moles and Equations
The mole Define amount of substance,
Define mole (symbol `mol'),
Define Avogadro's constant, NA,
Define Molar mass
Empirical and Define Empirical Formula
molecular
formulae What is the empirical formula of C12H48O6?
If a molecule includes 2H, 1S and 4O atoms, what is its molecular formula?
Determine the empirical formula of the compound formed when 6.54g of Zn reacts with 1.…read more

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Determine the molecular formula of a compound made of C 40%, O 53.3% and H 6.…read more

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Calculation of (f) carry out calculations, for reactants and products of chemical equations using amount of
reacting substance in mol, involving:
masses, mole (i) mass,
(ii) gas volume,
concentrations
(iii) solution volume and concentration
and volumes of
gases Using the six equations above calculate
1) the volume of 0.1M Hydrochloric acid that will react with 6.3g calcium carbonate
2) the mass of copper sulphate that will react with 4.2g of Zinc
3) the volume of gas produced at RTP if 4.…read more

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Acids, Bases and Salts
What does an acid release in aqueous solution?
What is the definition of an acid?
Write equations to show how these acids dissociate in water
Hydrochloric
Sulfuric
Nitric
What is the definition of a Base?
Write equations for the reaction of sulphuric acid with
Magnesium Oxide
Sodium Oxide
Potassium Hydroxide
Ammonia
What is an alkali?
Alkalis have the OH ion which accepts a proton to form water, write this equation
state the formulae of the common alkalis:
Sodium Hydroxide
Potassium Hydroxide…read more

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What is the definition of a salt?
Write Equations, include state symbols, for
Calcium Carbonate plus Hydrochloric Acid ­ what will you observe?
Copper Oxide plus Nitric Acid ­ what will you observe?
Sulfuric acid plus sodium hydroxide ­ what will you observe?
Write out these ionic equations:
Hydroxide ion reacting with a proton
Ammonia reacting with a proton
Define anhydrous ­
Define hydrated ­
Define Water of crystallisation
attempt the following questions
a 0.869g of CuSO4.aH20 gave a residue of 0.556g a=
b 1.…read more

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Molecules add up to zero
If hydrogen has an oxidation number of +1, what is the Ox no of Carbon in CH4?
3. Oxidation numbers add up to the charge of the ion
What is the Ox no of iron in Fe3+? Fe2+?
4.…read more

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Sodium Chlorate(V)
5. Potassium Manganate(VII)
6. Sodium Chromate(VI)
7. Potassium Dichromate(VI)
Write an ionic equation to describe Magnesium losing 2 electrons to form a magnesium ion
Has magnesium been oxidised or reduced?
What is the change in Oxidation Numbers?
Write an ionic equation to describe Bromine gaining an electron to form bromide ions
Has bromine been oxidised or reduced?
What is the change in Oxidation Numbers?
Redox stands for Reduction and Oxidation reactions and applies to reactions where there is a change in
oxidation numbers.…read more

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