GCSE AQA Chemistry Updated Questions and
Verified Answers/ Complete Solutions with Rationales
|Get It 100% Accurate!! Already Passed!!
EXAM QUESTIONS VERIFIED ANSWERS
1) What are the masses and charges of Protons = +ve
these parts of an atom? (mass 1)
• Proton Neutrons = neutral
• Neutron (mass 1)
• Electron
Electrons = -ve
(mass 1/2000th)
2) Why do atoms usually have no overall Atoms usually have no overall
electrical charge? charge because they have
equal numbers of protons
(+ve) and electrons (-ve),
which cancel one another out
3) All atoms of a particular element (e.g. Protons
carbon) all have the same number of
, what?
4) What does relative atomic mass tell you The number of protons and
about the atom? neutrons in the atom
5) What does atomic number tell you about The number of protons
the atom? (usually the same as the
number of electrons)
6) What is an isotope? An isotope is an atom with a
different amount of neutrons
7) How many electrons can occupy the 1st 2 in the 1st shell and 8 in the
and 2nd shell (energy level) of an atom? 2nd shell
8) The electron structure of sodium can be 2,8,1 means 2 electrons in the
represented as 2,8,1 - what does this 1st shell, 8 electrons in the
mean? 2nd shell and 1 electron in the
3rd shell
Represent these atoms: -
• Fluorine Fluorine = 2,7
• Oxygen
• Potassium Oxygen = 2,6
• Magnesium
Potassium = 2,8,8,1
Magnesium = 2,8,2
9) Define these terms: - Element - a pure substance
, made from 1 type of atom only
• Element
• Compound Compound - 2 or more
• Mixture elements chemically bound
Mixture - 2 or more elements
or compounds mixed together
which are not chemically
bound
10) What happens to the electrons of 2 During a chemical reaction
atoms when they chemically react? electrons are either given
away, taken, or shared
11) What is an ion? An ion is an atom with a
charge
How are +ve ions formed?
+ve ions have lost electrons
How are -ve ions formed?
-ve ions have gained electrons
12) What happens to the electrons when Ionic bonds - 1 atom loses
atoms form ionic bonds and covalent electrons and another gains
bonds? electrons
Which is the strongest? Covalent bonds - electrons are
Verified Answers/ Complete Solutions with Rationales
|Get It 100% Accurate!! Already Passed!!
EXAM QUESTIONS VERIFIED ANSWERS
1) What are the masses and charges of Protons = +ve
these parts of an atom? (mass 1)
• Proton Neutrons = neutral
• Neutron (mass 1)
• Electron
Electrons = -ve
(mass 1/2000th)
2) Why do atoms usually have no overall Atoms usually have no overall
electrical charge? charge because they have
equal numbers of protons
(+ve) and electrons (-ve),
which cancel one another out
3) All atoms of a particular element (e.g. Protons
carbon) all have the same number of
, what?
4) What does relative atomic mass tell you The number of protons and
about the atom? neutrons in the atom
5) What does atomic number tell you about The number of protons
the atom? (usually the same as the
number of electrons)
6) What is an isotope? An isotope is an atom with a
different amount of neutrons
7) How many electrons can occupy the 1st 2 in the 1st shell and 8 in the
and 2nd shell (energy level) of an atom? 2nd shell
8) The electron structure of sodium can be 2,8,1 means 2 electrons in the
represented as 2,8,1 - what does this 1st shell, 8 electrons in the
mean? 2nd shell and 1 electron in the
3rd shell
Represent these atoms: -
• Fluorine Fluorine = 2,7
• Oxygen
• Potassium Oxygen = 2,6
• Magnesium
Potassium = 2,8,8,1
Magnesium = 2,8,2
9) Define these terms: - Element - a pure substance
, made from 1 type of atom only
• Element
• Compound Compound - 2 or more
• Mixture elements chemically bound
Mixture - 2 or more elements
or compounds mixed together
which are not chemically
bound
10) What happens to the electrons of 2 During a chemical reaction
atoms when they chemically react? electrons are either given
away, taken, or shared
11) What is an ion? An ion is an atom with a
charge
How are +ve ions formed?
+ve ions have lost electrons
How are -ve ions formed?
-ve ions have gained electrons
12) What happens to the electrons when Ionic bonds - 1 atom loses
atoms form ionic bonds and covalent electrons and another gains
bonds? electrons
Which is the strongest? Covalent bonds - electrons are
