Question Booklet 1
Chemistry C1
1. The table below gives the composition of six particles which are either atoms or ions.
(a) Which particles are atoms? Explain your choice.
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(b) Which particle is a negative ion and why has this particle got a negative charge?
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(c) Which particles are positive ions?
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(d) Explain why particle A and particle D are isotopes.
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[Total: 7]
2.
In the Periodic Table, the elements are arranged in columns called Groups and in rows called
Periods.
(a) Complete the table for some of the elements in Period 3.
group number
1
2
13
14
15
16
17
symbol
Na
Mg
Al
Si
P
S
Cl
number of electrons
(b) Lithium has two naturally-occurring isotopes. These can be written as:
(i)
Describe the difference between these isotopes
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3. The symbols for two isotopes of iron are shown below.
(i) How do these two isotopes differ in their atomic structure?
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(ii) Determine the number of neutrons present in one atom of the isotope Fe-57.
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(iii) Determine the number of electrons in one Fe3+ ion?
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4. The table gives the composition of three particles.
What is the evidence in the table for each of the following?
Particle A is an atom.
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A, B and C are all particles of the same element.
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Particles A and C are isotopes of the same element.
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5.
6.
7.
8.
C =12
Abundance
98.9 %
C=13
1.06 %
C=14
0.04 %
Find Relative Atomic Mass of Carbon ( 2dp answer required )