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AQA-GCSE-chemistry paper 1

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  • December 24, 2024
  • 30
  • 2023/2024
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2.Bonding & Structure
Mastery Booklet
(Chemistry Paper 1)

Name: _________________
Year group : _________________

total : __________________




Page 1 of 30

,Q1.
This question is about fluorine.

(a) Figure 1 shows the arrangement of electrons in a fluorine atom.




(i) In which group of the periodic table is fluorine?

Group _______________________________
(1)

(ii) Complete the table below to show the particles in an atom and their relative masses.

Name of particle Relative mass

Proton

Neutron 1

Very small
(2)

(iii) Use the correct answer from the box to complete the sentence.

alkalis alloys isotopes

Atoms of fluorine with different numbers of neutrons are

called ________________ .
(1)

(b) Sodium reacts with fluorine to produce sodium fluoride.

(i) Complete the word equation for this reaction.

sodium + ___________________ → ____________________
(1)

(ii) Complete the sentence.

Substances in which atoms of two or more different elements are chemically




Page 2 of 30

, combined are called _____________________ .
(1)

(iii) The relative formula mass (Mr) of sodium fluoride is 42.

Use the correct answer from the box to complete the sentence.

ion mole molecule

The relative formula mass (Mr), in grams, of sodium fluoride is one

_______________ of the substance.
(1)

(iv) Figure 2 shows what happens to the electrons in the outer shells when a sodium atom
reacts with a fluorine atom.

The dots (•) and crosses (×) represent electrons.




Use Figure 2 to help you answer this question.

Describe, as fully as you can, what happens when sodium reacts with fluorine to
produce sodium fluoride.

______________________________________________________________

______________________________________________________________

______________________________________________________________

______________________________________________________________

______________________________________________________________

______________________________________________________________

______________________________________________________________

______________________________________________________________
(4)




Page 3 of 30

, (v) Sodium fluoride is an ionic substance.

What are two properties of ionic substances?

Tick (✔) two boxes.

Dissolve in water


Gas at room temperature


High melting point


Low boiling point

(2)
(Total 13 marks)


Q2.
This question is about magnesium.

(a) (i) The electronic structure of a magnesium atom is shown below.




Use the correct answer from the box to complete each sentence.


electrons neutrons protons shells


The nucleus contains protons and ____________________ .

The particles with the smallest relative mass that move around the nucleus are

called ____________________ .

Atoms of magnesium are neutral because they contain the same number of

electrons and ____________________ .
(3)




Page 4 of 30

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