AQA GCSE Combined Science Chemistry
- Paper 1 Exam Questions and Answers
Graded A+
- Correct answer-C1 Atomic Structure
Atoms are the particles that make up everything - Correct answer-What are atoms?
An element is a substance in which all the atoms are the same - Correct answer-
What is an element?
Elements are shown in the Periodic table - Correct answer-Where are elements
shown?
There are around 118 elements - Correct answer-How many elements are there?
A compound is a substance that contain two or more elements chemically
combined - Correct answer-What is a compound?
The properties of compounds are usually different to the elements that they are
made from - Correct answer-Describe the properties of compounds
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,A mixture is a substance with different elements or compounds not chemically
combined - Correct answer-What is a mixture?
An example of a mixture is sand and water as they are not chemically combined
and can be separated by physical means - Correct answer-Give an example of a
mixture
A molecule is a substance that has any elements chemically joined - Correct
answer-What is a molecule?
A chemical formula tells the elements in a molecule and the number of atoms of
each element - Correct answer-What does a chemical formula tell you about a
molecule?
Each element symbol starts with a capital letter, if there is a second letter it is in
lower case - Correct answer-How is a chemical formula presented?
- Correct answer-Give an example of a chemical formula
State symbols show the physical state of the substance solid (s), liquid (l), gas (g),
or dissolved in water (aq) - Correct answer-What are state symbols?
-Strong
-Good conductors of heat and electricity
-High melting and boiling points - Correct answer-Name three properties of Metals
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,-Weak
-Bad conductors of heat and electricity
-Low melting and boiling points - Correct answer-Name three properties of Non-
Metals
Four different ways of separating mixtures are filtration, crystallisation, distillation
or chromatography - Correct answer-State the four different ways of separating
mixtures
Pour your mixture onto the filter paper, the liquid simply passes through the filter
paper into the flask. The insoluble solid cannot pass through and so it stays on the
paper - Correct answer-Describe the process of filtration
Use the method of filtration to filter off any excess soluble solid. Evaporate the
mixture then transfer the hot mixture onto a dish. Crystals are formed when the
mixture has cooled - Correct answer-Describe the process of crystallisation
First we evaporate the mixture by heating it, the dissolved solid then vaporises.
These vapours condense in the condenser, the dissolved solid then flows into the
beaker and liquid stays in the flask - Correct answer-Describe the process of simple
distillation
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, Take a strip of filter paper and draw a line on the bottom of the paper. Put a small
drop of ink on the line, take a jar full of water up to the line and put the filter paper
in. As the water moves up we see different colours on the paper these are the dyes
in the ink - Correct answer-Describe the process of chromatography
Early ideas of the structure of atoms stated that they are tiny spheres that cannot be
divided - Correct answer-What were the early ideas of the structure of atoms?
The plum pudding model is what scientists suggested is the structure of atoms is
after the discovery of the electron - Correct answer-What is the plum pudding
model?
The plum pudding model suggested that an atom is a ball of positive charge with
negative electrons in embedded in it - Correct answer-Describe the plum pudding
model
Rutherford took a piece of gold foil, he then fired tiny positive alpha particles at
the gold foil - Correct answer-Describe how Rutherford carried out the gold foil
experiment
Rutherford observed that most of the particles when straight through the gold foil
and sometimes the alpha particles bounce back of the gold foil - Correct answer-
What did Rutherford observe in the experiment?
©COPYRIGHT 2025, ALL RIGHTS RESERVED 4
- Paper 1 Exam Questions and Answers
Graded A+
- Correct answer-C1 Atomic Structure
Atoms are the particles that make up everything - Correct answer-What are atoms?
An element is a substance in which all the atoms are the same - Correct answer-
What is an element?
Elements are shown in the Periodic table - Correct answer-Where are elements
shown?
There are around 118 elements - Correct answer-How many elements are there?
A compound is a substance that contain two or more elements chemically
combined - Correct answer-What is a compound?
The properties of compounds are usually different to the elements that they are
made from - Correct answer-Describe the properties of compounds
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
,A mixture is a substance with different elements or compounds not chemically
combined - Correct answer-What is a mixture?
An example of a mixture is sand and water as they are not chemically combined
and can be separated by physical means - Correct answer-Give an example of a
mixture
A molecule is a substance that has any elements chemically joined - Correct
answer-What is a molecule?
A chemical formula tells the elements in a molecule and the number of atoms of
each element - Correct answer-What does a chemical formula tell you about a
molecule?
Each element symbol starts with a capital letter, if there is a second letter it is in
lower case - Correct answer-How is a chemical formula presented?
- Correct answer-Give an example of a chemical formula
State symbols show the physical state of the substance solid (s), liquid (l), gas (g),
or dissolved in water (aq) - Correct answer-What are state symbols?
-Strong
-Good conductors of heat and electricity
-High melting and boiling points - Correct answer-Name three properties of Metals
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
,-Weak
-Bad conductors of heat and electricity
-Low melting and boiling points - Correct answer-Name three properties of Non-
Metals
Four different ways of separating mixtures are filtration, crystallisation, distillation
or chromatography - Correct answer-State the four different ways of separating
mixtures
Pour your mixture onto the filter paper, the liquid simply passes through the filter
paper into the flask. The insoluble solid cannot pass through and so it stays on the
paper - Correct answer-Describe the process of filtration
Use the method of filtration to filter off any excess soluble solid. Evaporate the
mixture then transfer the hot mixture onto a dish. Crystals are formed when the
mixture has cooled - Correct answer-Describe the process of crystallisation
First we evaporate the mixture by heating it, the dissolved solid then vaporises.
These vapours condense in the condenser, the dissolved solid then flows into the
beaker and liquid stays in the flask - Correct answer-Describe the process of simple
distillation
©COPYRIGHT 2025, ALL RIGHTS RESERVED 3
, Take a strip of filter paper and draw a line on the bottom of the paper. Put a small
drop of ink on the line, take a jar full of water up to the line and put the filter paper
in. As the water moves up we see different colours on the paper these are the dyes
in the ink - Correct answer-Describe the process of chromatography
Early ideas of the structure of atoms stated that they are tiny spheres that cannot be
divided - Correct answer-What were the early ideas of the structure of atoms?
The plum pudding model is what scientists suggested is the structure of atoms is
after the discovery of the electron - Correct answer-What is the plum pudding
model?
The plum pudding model suggested that an atom is a ball of positive charge with
negative electrons in embedded in it - Correct answer-Describe the plum pudding
model
Rutherford took a piece of gold foil, he then fired tiny positive alpha particles at
the gold foil - Correct answer-Describe how Rutherford carried out the gold foil
experiment
Rutherford observed that most of the particles when straight through the gold foil
and sometimes the alpha particles bounce back of the gold foil - Correct answer-
What did Rutherford observe in the experiment?
©COPYRIGHT 2025, ALL RIGHTS RESERVED 4
