OCR MERGED QUESTION PAPER AND MARK
SCHEME
GCSE (9–1) Chemistry A (Gateway Science)
J248/01 (Foundation Tier)
, 2
Section A
You should spend a maximum of 30 minutes on this section.
Write your answer to each question in the box provided.
1 Which part of an atom is negatively charged?
A Electron
B Neutron
C Nucleus
D Proton
Your answer [1]
2 Which of these changes is a chemical change?
A Ice melting
B Shaping hot metal with a hammer
C Water condensing
D Wood burning
Your answer [1]
3 Which group of elements on the Periodic Table has a full outer shell of electrons?
A 0
B 1
C 2
D 7
Your answer [1]
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, 3
4 Sodium chloride, NaCl, is an ionic compound.
How are the ions held together in sodium chloride?
A Covalent bonds
B Delocalised electrons
C Electrostatic forces
D Intermolecular forces
Your answer [1]
5 Which equipment is used for filtration?
A
B
C
D
Your answer [1]
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, 4
6 Which scientist suggested the idea that electrons exist in electron shells?
A Bohr
B Dalton
C Rutherford
D Thomson
Your answer [1]
7 Which row describes a formulation?
Description Amount of chemicals
A compound exact
B mixture exact
C compound random
D mixture random
Your answer [1]
8 The table shows information about some atoms and ions.
Which two are isotopes?
Atom or ion Number of protons Number of neutrons Number of electrons
1 17 18 17
2 17 18 18
3 17 20 17
4 18 20 18
A 1 and 2
B 1 and 3
C 2 and 4
D 3 and 4
Your answer [1]
© OCR 2024
SCHEME
GCSE (9–1) Chemistry A (Gateway Science)
J248/01 (Foundation Tier)
, 2
Section A
You should spend a maximum of 30 minutes on this section.
Write your answer to each question in the box provided.
1 Which part of an atom is negatively charged?
A Electron
B Neutron
C Nucleus
D Proton
Your answer [1]
2 Which of these changes is a chemical change?
A Ice melting
B Shaping hot metal with a hammer
C Water condensing
D Wood burning
Your answer [1]
3 Which group of elements on the Periodic Table has a full outer shell of electrons?
A 0
B 1
C 2
D 7
Your answer [1]
© OCR 2024
, 3
4 Sodium chloride, NaCl, is an ionic compound.
How are the ions held together in sodium chloride?
A Covalent bonds
B Delocalised electrons
C Electrostatic forces
D Intermolecular forces
Your answer [1]
5 Which equipment is used for filtration?
A
B
C
D
Your answer [1]
© OCR 2024 Turn over
, 4
6 Which scientist suggested the idea that electrons exist in electron shells?
A Bohr
B Dalton
C Rutherford
D Thomson
Your answer [1]
7 Which row describes a formulation?
Description Amount of chemicals
A compound exact
B mixture exact
C compound random
D mixture random
Your answer [1]
8 The table shows information about some atoms and ions.
Which two are isotopes?
Atom or ion Number of protons Number of neutrons Number of electrons
1 17 18 17
2 17 18 18
3 17 20 17
4 18 20 18
A 1 and 2
B 1 and 3
C 2 and 4
D 3 and 4
Your answer [1]
© OCR 2024
