AQA GCSE Chemistry - Paper 1 Questions And Answers Rated A+.
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AQA GCSE Chemistry - Paper 1
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AQA GCSE Chemistry - Paper 1
AQA GCSE Chemistry - Paper 1 Questions And Answers Rated A+.
What is the charge of a proton? - correct answer. +1
What is the charge of a neutron? - correct answer. 0
What is the charge of an electron? - correct answer. -1
What is the relative mass of a proton? - correct ...
AQA GCSE Chemistry - Paper 1 Questions
And Answers Rated A+.
What is the charge of a proton? - correct answer. +1
What is the charge of a neutron? - correct answer. 0
What is the charge of an electron? - correct answer. -1
What is the relative mass of a proton? - correct answer. 1
What is the relative mass of a neutron? - correct answer. 1
What is the relative mass of an electron? - correct answer. Very small
How many types of atoms do elements contain? - correct answer. Only one type
What are compounds? - correct answer. Substances containing two or more different
elements that are chemically bonded together
What are mixtures? - correct answer. Substances containing two or more different
elements that are not chemically bonded together
What pattern is formed from carrying out paper chromatography? - correct answer.
Chromatogram
Which method of separation is useful to separate an insoluble solid from a liquid? -
correct answer. Filtration
Which method of separation is useful to separate a soluble solid from a liquid? - correct
answer. Evaporation or Crystillisation
Which method of distillation separates liquids with similar boiling points? - correct
answer. Fractional distillation
Who discovered that the plum pudding model was wrong? - correct answer. Ernest
Rutherford
Who devised an experiment that proved the existence of the neutron? - correct answer.
Niels Bohr
,Why did Mendeleev leave gaps in his Table of Elements? - correct answer. To ensure
that elements with similar properties stayed in the same groups. The gaps indicated the
existence of undiscovered elements and allowed Mendeleev to predict what their
properties might be
How are the group number and the number of electrons in the outer shell of an element
related? - correct answer. The group number tells you how many electrons are in the
outer shell of an element. E.g. sodium is in Group 1 therefore it has 1 electron on its
outer shell
What kind of ions do metals form? - correct answer. Positive
Where are the non-metals on the periodic table? - correct answer. On the right hand
side
Give three properties which are specific to transition metals - correct answer. 1) They
can form more than one ion e.g cobalt form Co2+
2) They are often coloured, therefore compounds which contain them are colourful e.g.
potassium chromate is yellow
3) They often make good catalysts e.g. nickel based catalysts are used in the
hydrogenation of alkenes
State three trends as you go down Group 1 - correct answer. 1) Increased reactivity -
the outer electron is more easily lost as the attraction between the nucleus and the
electron decreases because the electron is further away from the nucleus
2) Lower melting and boiling points
3) Higher relative atomic mass
What are the products of the reaction of a Group 1 metal and water - correct answer.
Hydrogen gas and a metal hydroxide
E.g. sodium + water --> sodium hydroxide + hydrogen
What's the difference between the hardness of Group 1 and transition metals? - correct
answer. Transition metals are harder, denser and stronger than Group 1 metals
What's the difference between the reactivity of Group 1 and transition metals? - correct
answer. Group 1 metals are much more reactive than transition metals
What's the difference between the melting points of Group 1 and transition metals? -
correct answer. Transition metals have higher melting points than Group 1 metals
What trends occur as you go down Group 7? - correct answer. 1) They become less
reactive - it's harder to gain an extra electron because the outer shell's further from the
nucleus
2) They have higher melting and boiling points
3) They have higher relative atomic masses
, What is the charge of the ions that halogens form when they react with metals? - correct
answer. They form negative ions
What is the trend in boiling point as you go down Group 0? - correct answer. The
boiling points increase
What subatomic particles does the nucleus contain? - correct answer. Protons and
neutrons
What is relative atomic mass? - correct answer. The mass number which refers to the
element as a whole
How are positive ions formed? - correct answer. A metal atom loses electrons
How are negative ions formed? - correct answer. A non-metal gains electrons
What is air a mixture of? - correct answer. Gases, mainly nitrogen, oxygen, carbon
dioxide and argon
What is crude oil a mixture of? - correct answer. Different length hydrocarbon
molecules
How can you separate substances in a mixture? - correct answer. Chromatography
What is simple distillation used for? - correct answer. Separating out a liquid from a
solution
E.g. separating pure water from seawater
How were elements arranged in the early 1800s? - correct answer. By their physical
and chemical properties and their relative atomic mass
How are columns arranged? - correct answer. Elements with similar properties
What are the three similar basic properties of metals? - correct answer. 1) They're
strong but are malleable
2) They're great at conducting heat and electricity
3) They have high boiling and melting points
What is the product of the reaction of a Group 1 metal with chlorine? - correct answer.
A metal chloride salt
E.g. sodium + chlorine --> sodium chloride
What is the product of the reaction of a Group 1 metal with oxygen? - correct answer.
A metal oxide, depending on the Group 1 metal
-Lithium + oxygen --> lithium oxide
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