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Chemistry Y11 > Symbols, Formulae And Equations > Flashcards

Symbols, Formulae And Equations Flashcards

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1
Q

Define element

A

A substance that consists of a single type of atom which cannot be split into anything simpler

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2
Q

Define compound

A

Is two or more different elements chemically combined

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3
Q

Define diatomic molecule

A

Two atoms covalently bonded together.

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4
Q

Name the diatomic elements

A 
Hydrogen 
Nitrogen
Oxygen
Fluorine 
Chlorine 
Bromine 
Iodine
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5
Q

Define valency

A

The combining power of an atom or ion. The number of electrons a metal has to give away from its outer shell or a non metal needs to gain to complete the outer shell

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6
Q

Give the ion former from the followed groups

1
2
3
4
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6
7
A 
Group 1: +
Group 2: 2+
Group 3: 3+
Group 4: /
Group 5: 3-
Group 6: 2-
Group 7: -
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7
Q

How to work out the formulae of compounds

Iron(iii) oxide

A

Fe valency: 3
O valency: 2

Compound formulae: Fe2O3

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8
Q

Work out the compound formulae of copper(ii) oxide

A

Cu2O2 = CuO

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9
Q

Valency for the formula ion Co2-3

A

2

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10
Q

Work out the formulae for Calcium carbonate: Ca2+ valency; 2

CO2- 3 valency; 2

A

Answer: CaCO3

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11
Q

Work out the formulae for sodium hydroxide
Na+ valency; 1
OH- valency; 1

A

NaOH

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12
Q

Write the formulae for this complex compound

Magnesium Sulfate

A

MgSO4

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13
Q

Write formulae for this complex compound

Ammonium Nitrate

A

NH4NO3

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14
Q

Compounds which end in -ide are…

A

Cations combined with a single non metal

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15
Q

Compounds which end in -ate or -ite have…

A

Oxygen present

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16
Q

Chemical symbols for hydrochloric acid

A

HCL

17
Q

Chemical symbols for sulphuric acid

A

H2SO

18
Q

Chemical symbols for nitric acid

A

HNO3

19
Q

Define a covalent bond

A

A chemical bond that occurs between two non metals which share a pair of electrons

20
Q

Define an ionic bond

A

A chemical bond in which the metal loses electrons to the non metal

21
Q

Define a molecular bond

A

An ion formed by two or more atoms covalently bonded

Chemistry Y11 (9 decks)

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