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A-level Chemistry > 2.1 - Atoms, compounds, molecules and equations > Flashcards

2.1 - Atoms, compounds, molecules and equations Flashcards

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1
Q

Define the term ‘Isotope’ ?

A

Isotope - An atom with the same number of protons and electrons but a different number of neutrons

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2
Q

Define the term ‘ion’ ?

A

Ion - An atom with the same number of protons but a different number of electrons

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3
Q

What subatomic particles are atoms made up of ?

A

Protons, electrons and neutrons

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4
Q

What is the relative charge and relative mass of protons, electrons and neutrons ?

A
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5
Q

What does A,Z and X represent in this Isotope notation ?

A
  • A = Mass number
  • Z = Atomic number
  • X = Element of isotope
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6
Q

Define the term ‘relative atomic mass’ ?

A

Relative atomic mass - The weighted mean mass of an atom of an element compared with 1/12 of the mass of an atom of carbon-12

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7
Q

Define the term ‘Relative formula mass’ ?

A

Relative formula mass - The weighted mean mass of the formula unit of a compound compared with 1/12 of the mass of a carbon-12 atom

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8
Q

Define the term ‘Relative molecular mass’ ?

A

Relative molecular mass - The weighted mean mass of a molecule of a compound compared with 1/12 of the mass of an atom of carbon-12

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9
Q

Define the term ‘Relative isotopic mass’ ?

A

Relative isotopic mass - The mass of an atom of an isotope compared with 1/12 of a the mass of a carbon-12 atom

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10
Q

What are the uses of mass spectrometry?

A
  • To determine the relative masses of isotopes
  • To determine the relative abundance of isotopes
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11
Q

What is the equation to calculate the relative atomic mass ?

A

Relative atomic mass = ( Isotope mass x abundance ) + ( Isotope mass x abundance ) / sum of abundance

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12
Q

What is the equation to calculate the relative isotopic abundance ?

A

Relative atomic mass = ( Isotope mass x [ y ] ) + ( Isotope mass x [ sum of abundance - y ] ) / sum of abundance

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13
Q

Do you know how to do calculations to work out the relative atomic mass and relative isotopic abundance ?

A

Yes

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14
Q

Write the formula of a nitrate ion ?

A

NOv3-

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15
Q

Write the formula of a carbonate ion ?

A

CO₃²⁻

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16
Q

Write the formula of a sulphate ions ?

A

SO₄²-

17
Q

Write the formula of a hydroxide ion ?

A

OH-

18
Q

Write the formula of an ammonium ion ?

A

NHv4+

19
Q

Write the formula of a zinc ion ?

A

Zn2+

20
Q

Write the formula of a silver ion ?

A

Ag+

21
Q

What is the following ion called : Ag+ ?

A

A silver ion

22
Q

What is the following ion called : Zn2+ ?

A

A zinc ion

23
Q

What is the following ion called : OH- ?

A

A hydroxide ion

24
Q

What is the following ion called : NHv4+ ?

A

An ammonium ion

25
Q

What is the following ion called : SOv4 2- ?

A

A sulphate ion

26
Q

What is the following ion called : COv3 ^2-

A

A carbonate ion

27
Q

What is the following ion called : NOv3- ?

A

A nitrate ion

28
Q

Do you know how to write the equations of ionic compounds ?

A

Yes

29
Q

Do you know what group numbers correspond to what charge ions ?

A

Group 1 : X+
Group 2 : X2+
Group 3 : X3+

Group 5 : X3-
Group 6 : X2-
Group 7 : X-

30
Q

What is the full version of the following reaction : Metal + acid ?

A

Metal + acid —> salt + hydrogen

31
Q

What is the full version of the following reaction : metal + water ?

A

Metal + water —> metal hydroxide + hydrogen

32
Q

What is the full version of the following reaction : Acid + Alkali ?

A

Acid + Alkali —> salt + water

33
Q

What is the full version of the following reaction : Metal hydrogencarbonate + acid ?

A

Metal hydrogencarbonate + acid —> salt + water + carbon dioxide

34
Q

Do you know how to balance equations ?

A

Yes

A-level Chemistry (29 decks)

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