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Chemistry YEAR 9 > Foundations Of Chemistry > Flashcards

Foundations Of Chemistry Flashcards

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1
Q

Where is the proton in the atom?

A

Nucleus

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2
Q

Where is the neutron in the atom?

A

Nucleus

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3
Q

Where is the electron in the atom?

A

Shells/energy levels

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4
Q

What is the relative mass of a proton?

A

1

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5
Q

What is the relative mass of a neutron?

A

1

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6
Q

What is the relative mass of an electron?

A

Negligible or 1/1836

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7
Q

What is the relative charge of a proton?

A

+1

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8
Q

What is the relative charge of a neutron?

A

0

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9
Q

What is the relative mass of an electron?

A

-1

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10
Q

How do you know the number of shells in an atom from the periodic table?

A

Period number

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11
Q

How do you know the number of electrons in the outer shell of an atom from the periodic table?

A

Group number

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12
Q

What is the atomic number?

A

Number of protons

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13
Q

What is the mass number?

A

Number of protons and neutrons

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14
Q

How do you know the number of electrons in an atom from the periodic table?

A

Atomic number

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15
Q

How do you know the number of neutrons in an atom from the periodic table?

A

Mass number - atomic number

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16
Q

Meaning of isotopes

A

Atoms of the same element with the same number of protons but different numbers of neutrons

17
Q

Meaning of relative atomic mass

A

The average mass of all the isotopes of an element taking into account the abundance of each isotope measured relative to 1/12 of the mass of an atom of ⬆️12 ⬇️6 C

18
Q

Symbol for relative atomic mass

A

Ar

19
Q

How do you calculate relative atomic mass?

A

‘abundance 1’ x ‘mass 1’ + ‘abundance 2’ x ‘mass 2’ (etc.) /100

20
Q

What is the charge of silver?

A

Ag+

21
Q

What is the charge of copper?

A

Cu2+

22
Q

What is the charge of iron?

A

Fe3+

23
Q

What is the charge of lead?

A

Pb2+

24
Q

What is the charge of zinc?

A

Zn2+

25
Q

What is the charge of hydroxide?

A

OH-

26
Q

What is the charge of ammonium?

A

NH4 +

27
Q

What is the charge of carbonate?

A

CO3 2-

28
Q

What is the charge of nitrate?

A

NO3 -

29
Q

What is the charge of sulfate?

A

SO4 2-

30
Q

What is the charge of metals in group 1?

A

+

31
Q

What is the charge of metals in group 2?

A

2+

32
Q

What is the charge of metals in group 3?

A

3+

33
Q

What is the charge of non-metals in group 5?

A

3-

34
Q

What is the charge of non-metals in group 6?

A

2-

35
Q

What is the charge of non-metals in group 7?

A

-

36
Q

Why do atoms become ions?

A

To achieve a full outer shell when this occurs, they end up with a charge

Chemistry YEAR 9 (2 decks)

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