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Chemistry A level > Quantitive chemistry > Flashcards

Quantitive chemistry Flashcards

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1
Q

What is an element ?

A

An element contains only one kind of atom.

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2
Q

What is a Monatomic element ?

A

An element containing only one atom e.g. the noble gases

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3
Q

What is a simple molecular element ?

A

An element containing two (diatomic) or more of the same atom chemically bonded together

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4
Q

what is an ionic element ?

A

There are no ionic elements !

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5
Q

Are there Metallic elements ?

A

Yes, e.g. everything to the left of the staircase

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6
Q

What are some examples of a giant covalent element ?

A

Diamond, graphite and silicon which are all allotropes of carbon

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7
Q

what is a compound ?

A

A compound is 2 or more different atoms bonded together

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8
Q

Monatomic compound

A

there are no monatomic compounds !

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9
Q

what are examples of simple molecular compounds ?

A

CO2, CO, NO, NO2, SO2, SO3, NH3, CH4, H2S

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10
Q

what are examples of Ionic Compounds ?

A

Hydrochloric acid (HCL) sulfuric acid (H2SO4) nitric acid (HNO3) Phosphoric acid (H3PO4)

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11
Q

…. In ionic compounds have to …….

A
  1. charges

2. cancel out

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12
Q

what is an example of a giant covalent compound ?

A

Silicon dioxide (SIO2)

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13
Q

what is the charge of group 1 ions ?

A

1+

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14
Q

what is the charge of group 2 ions?

A

2+

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15
Q

what is the charge of group 3 ions ?

A

3+

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16
Q

what are some other common positive ions?

A

Silver (Ag+) Zinc (Zn2+) ammonium (NH4+) hydrogen (H+)

17
Q

an element has to ….. an electron to become a ….. ion

A
  1. loose

2. positive

18
Q

what is the charge of group 7 ions ?

A

1 -

19
Q

what is the charge of group 6 ions ?

A

2 -

20
Q

examples of other common negative ions ?

A

Nitrate (NO3^-) Sulfate (SO4^2-) carbonate (CO3^2-) hydrocarbonate (HCO3 ^ -) hydroxide (OH^-) hydride (H^-) phosphate (PO4^3-) silica (SiO2)

Chemistry A level (9 decks)

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