AQA A LEVEL CHEMISTRY PAPER 3 FULLY
SOLVED TEST PAPER GRADED A+
◉ Give an example of a chemical formula
Answer:
◉ What are state symbols?
Answer: State symbols show the physical state of the substance solid
(s), liquid (l), gas (g), or dissolved in water (aq)
◉ Name three properties of Metals
Answer: -Strong
-Good conductors of heat and electricity
-High melting and boiling points
◉ Name three properties of Non-Metals
Answer: -Weak
-Bad conductors of heat and electricity
-Low melting and boiling points
◉ State the four different ways of separating mixtures
,Answer: Four different ways of separating mixtures are filtration,
crystallisation, distillation or chromatography
◉ Describe the process of filtration
Answer: 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
◉ Describe the process of crystallisation
Answer: 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
◉ Describe the process of simple distillation
Answer: 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
◉ Describe the process of chromatography
Answer: 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
,◉ What were the early ideas of the structure of atoms?
Answer: Early ideas of the structure of atoms stated that they are
tiny spheres that cannot be divided
◉ What is the plum pudding model?
Answer: The plum pudding model is what scientists suggested is the
structure of atoms is after the discovery of the electron
◉ Describe the plum pudding model
Answer: The plum pudding model suggested that an atom is a ball of
positive charge with negative electrons in embedded in it
◉ Describe how Rutherford carried out the gold foil experiment
Answer: Rutherford took a piece of gold foil, he then fired tiny
positive alpha particles at the gold foil
◉ What did Rutherford observe in the experiment?
Answer: Rutherford observed that most of the particles when
straight through the gold foil and sometimes the alpha particles
bounce back of the gold foil
◉ What did Rutherford discover from these observations?
Answer: Rutherford discovered that atoms are mainly empty space
as most of the alpha particles went straight through the gold atoms
, and that the nucleus of the atom is very small as only a small
number of alpha particles bounce back
◉ Describe the structure of the nuclear model
Answer: The nuclear model states that most of an atom is empty
space, in the centre is the nucleus which contains protons and
neutrons around the edge we find electrons
◉ What is the Relative mass and the relative charge of protons,
neutrons and electrons?
Answer:
◉ Why do atoms have the same number of protons as electrons?
Answer: Because atoms have have no overall charge
◉ What is an Ion?
Answer: An ion is a charged particle, it is possible to get positive or
negative ions
◉ What is an Isotope?
Answer: Atoms of the same element with different numbers of
neutrons are called isotopes
SOLVED TEST PAPER GRADED A+
◉ Give an example of a chemical formula
Answer:
◉ What are state symbols?
Answer: State symbols show the physical state of the substance solid
(s), liquid (l), gas (g), or dissolved in water (aq)
◉ Name three properties of Metals
Answer: -Strong
-Good conductors of heat and electricity
-High melting and boiling points
◉ Name three properties of Non-Metals
Answer: -Weak
-Bad conductors of heat and electricity
-Low melting and boiling points
◉ State the four different ways of separating mixtures
,Answer: Four different ways of separating mixtures are filtration,
crystallisation, distillation or chromatography
◉ Describe the process of filtration
Answer: 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
◉ Describe the process of crystallisation
Answer: 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
◉ Describe the process of simple distillation
Answer: 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
◉ Describe the process of chromatography
Answer: 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
,◉ What were the early ideas of the structure of atoms?
Answer: Early ideas of the structure of atoms stated that they are
tiny spheres that cannot be divided
◉ What is the plum pudding model?
Answer: The plum pudding model is what scientists suggested is the
structure of atoms is after the discovery of the electron
◉ Describe the plum pudding model
Answer: The plum pudding model suggested that an atom is a ball of
positive charge with negative electrons in embedded in it
◉ Describe how Rutherford carried out the gold foil experiment
Answer: Rutherford took a piece of gold foil, he then fired tiny
positive alpha particles at the gold foil
◉ What did Rutherford observe in the experiment?
Answer: Rutherford observed that most of the particles when
straight through the gold foil and sometimes the alpha particles
bounce back of the gold foil
◉ What did Rutherford discover from these observations?
Answer: Rutherford discovered that atoms are mainly empty space
as most of the alpha particles went straight through the gold atoms
, and that the nucleus of the atom is very small as only a small
number of alpha particles bounce back
◉ Describe the structure of the nuclear model
Answer: The nuclear model states that most of an atom is empty
space, in the centre is the nucleus which contains protons and
neutrons around the edge we find electrons
◉ What is the Relative mass and the relative charge of protons,
neutrons and electrons?
Answer:
◉ Why do atoms have the same number of protons as electrons?
Answer: Because atoms have have no overall charge
◉ What is an Ion?
Answer: An ion is a charged particle, it is possible to get positive or
negative ions
◉ What is an Isotope?
Answer: Atoms of the same element with different numbers of
neutrons are called isotopes
