Combined Science: Chemistry Paper 1 HIGHER(AQA) Practice Exam Questions And All Complete Solutions.
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Course
Combined Science
Institution
Combined Science
What are all substances made out of? - Answer Atoms
One type of atoms joined together - Answer Elements
Two or more elements chemically bonded - Answer Compounds
Two or more elements not chemically bonded - Answer Mixtures
Why do scientists use chemical formulae? - Answer ...
Combined Science: Chemistry Paper 1
HIGHER(AQA) Practice Exam Questions
And All Complete Solutions.
What are all substances made out of? - Answer Atoms
One type of atoms joined together - Answer Elements
Two or more elements chemically bonded - Answer Compounds
Two or more elements not chemically bonded - Answer Mixtures
Why do scientists use chemical formulae? - Answer To find out how many compounds are in each
element
How are compounds separated? - Answer Electrolysis
What are the reactants? - Answer Substances that are reacted
What are the products? - Answer The new substances that are formed
What is filtration? - Answer Separate soluble solutions from insoluble solutions
What is Crystallization? - Answer Obtaining a soluble from a solution
What is Simple Distillation? - Answer Obtaining a solvent from solution
, What is Fractional Distillation? - Answer Separating mixtures with different boiling points
What is Chromatography? - Answer Separating the different soluble, coloured components of a mixture
What is the 'Plum Pudding Model'? - Answer JJ Thomson believes electrons were surrounded by a sea
of positive charge
How did Rutherford improve the arrangement of the atom? - Answer He created a nucleus, containing
protons and neutrons
How did Bohr improve the arrangement of the atom? - Answer He created the shells which the
electrons would orbit around
What was the relative mass of the proton? - Answer 1
What was the relative mass of the neutron? - Answer 1
What was the relative mass of the electron? - Answer 1/1840
What was the relative charge of the proton? - Answer +1
What was the relative charge of the electron? - Answer -1
What was the relative charge of the neutron? - Answer 0
What is an isotope? - Answer An element with the same amount of protons and electrons but different
number of neutrons
What is the electron configuration? - Answer Shows how electrons are arranged around the nucleus in
shells.
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