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Physics P2b Topic 5

Biology
Chemistry Science
P2a
P2b
Topic 4
Topic 5
Topic 6
What is an isotope?
Recall the meanings of the terms Atomic Number, Mass number and
Relative Atomic Mass.
Understand the term `Isotope and calculate the relative atomic mass
using the mass numbers and abundance of…

Page 3

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Page 4

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Physics P2b Topic 5

Write definitions for the following
Mass Number This is the mass of an atom compared to all the other
atoms in the periodic table.
Atomic Number This is the number of Protons found in the nucleus of
an atom.
Relative Atomic Mass This is the relative…

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Physics P2b Topic 5

The relative Atomic Mass of Chlorine is recorded as 35.5.
35.5 ­ 17 = 18.5
You cant have half a neutron. So how can this be explained?
All chlorine atoms have 17 Protons
Some chlorine atoms have 18 Neutrons giving them a mass of 35
Some…

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Physics P2b Topic 5

75% of the Chlorine in existence is Cl
35

25% of the Chlorine in existence is Cl
37

This means that the atomic mass shown in the periodic table is an
average of the masses of both isotopes taking into account their
relative proportions
(75 x…

Page 9

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Page 10

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Physics P2b Topic 5

The periodic table states that the Relative Atomic Mass of Copper is
64
Copper has two naturally occurring isotopes. 69% of all Copper is Cu
63

64
(34 neutrons) 31% of all Copper is Cu
65

(36 Neutrons)
Calculate the average relative atomic mass of Copper…

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Pages in this set

Page 1

Preview of page 1

Page 2

Preview of page 2
Physics P2b Topic 5

Biology
Chemistry Science
P2a
P2b
Topic 4
Topic 5
Topic 6
What is an isotope?
Recall the meanings of the terms Atomic Number, Mass number and
Relative Atomic Mass.
Understand the term `Isotope and calculate the relative atomic mass
using the mass numbers and abundance of…

Page 3

Preview of page 3

Page 4

Preview of page 4
Physics P2b Topic 5

Write definitions for the following
Mass Number This is the mass of an atom compared to all the other
atoms in the periodic table.
Atomic Number This is the number of Protons found in the nucleus of
an atom.
Relative Atomic Mass This is the relative…

Page 5

Preview of page 5

Page 6

Preview of page 6
Physics P2b Topic 5

The relative Atomic Mass of Chlorine is recorded as 35.5.
35.5 ­ 17 = 18.5
You cant have half a neutron. So how can this be explained?
All chlorine atoms have 17 Protons
Some chlorine atoms have 18 Neutrons giving them a mass of 35
Some…

Page 7

Preview of page 7

Page 8

Preview of page 8
Physics P2b Topic 5

75% of the Chlorine in existence is Cl
35

25% of the Chlorine in existence is Cl
37

This means that the atomic mass shown in the periodic table is an
average of the masses of both isotopes taking into account their
relative proportions
(75 x…

Page 9

Preview of page 9

Page 10

Preview of page 10
Physics P2b Topic 5

The periodic table states that the Relative Atomic Mass of Copper is
64
Copper has two naturally occurring isotopes. 69% of all Copper is Cu
63

64
(34 neutrons) 31% of all Copper is Cu
65

(36 Neutrons)
Calculate the average relative atomic mass of Copper…

Comments

No comments have yet been made