test 1, atoms and ions, revision Flashcards

1
Q

mass, charge and location of neutron

A

1
neutral
nucleus

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2
Q

mass, charge and location of proton

A

1
+
nucleus

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3
Q

mass, charge and location of electron

A

1/2000
minus
shells surrounding nucleus

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4
Q

atomic number tells you

A

number of protons, sometimes number of electrons

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5
Q

mass number tells you

A

protons + neutrons

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6
Q

isotope definition

A

variations of an atom that have the same number of protons but different numbers of neutrons. they have the same chemical properties but different physical properties

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7
Q

RAM

A

(percentage x mass number) + (percentage x mass number)… divided by 100

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8
Q

how do atoms from groups 1-3 form ions and what charge is that ion

A

by losing electrons, they get a positive ion

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9
Q

how do atoms from groups 5-7 form ions and what charge is that ion

A

by gaining electrons, they form a negative ion

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10
Q

why are noble gases unreactive (can’t become ions)

A

they already have a full outer shell

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11
Q

how do you indicate the charge of the ion on a transition metal

A

using roman numerals

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12
Q

describe an ionic compound

A

the ratio of ions in the formula

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13
Q

formula for hydrogen

A

H2

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14
Q

formula for oxygen

A

O2

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15
Q

formula for nitrogen

A

N2

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16
Q

formula for chlorine

A

Cl2

17
Q

formula for bromine

A

Br2

18
Q

formula for water

A

H2O

19
Q

formula for carbon dioxide

A

CO2

20
Q

formula for ammonia

A

NH3

21
Q

formula for hydrochloric acid

A

HCl

22
Q

formula for sulphuric acid

A

H2SO4

23
Q

formula for nitric acid

A

HNO3