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4. Chemistry AOS2 > Ionic Compounds Chemical Formulas_Key Questions > Flashcards

Ionic Compounds Chemical Formulas_Key Questions Flashcards

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1
Q

Write the name of the following compound - Li2O

A

Lithium Oxide

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2
Q

Write the name of the following compound - Ba(NO3)2

A

Barium Nitrate

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3
Q

Write the name of the following compound - PbBr2

A

Lead (II) Bromide

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4
Q

Write the name of the following compound - (NH4)3PO4

A

Ammonium Phosphate

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5
Q

Write the name of the following compound - FeCO3

A

Iron(II) Carbonate

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6
Q

Write the name of the following compound - Al2O3

A

Aluminium Oxide

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7
Q

Write the name of the following compound - ZnCl2

A

Zinc Chloride

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8
Q

Write the name of the following compound - Na2SO4

A

Sodium Sulfate

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9
Q

Write the formula for the following compound - copper(II) fluoride

A

CuF2

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10
Q

Write the formula for the following compound - lithium nitrate

A

LiNO3

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11
Q

Write the formula for the following compound - potassium sulfide

A

K2S

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12
Q

Write the formula for the following compound - magnesium nitrite

A

Mg

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13
Q

Write the formula for the following compound - iron (III) hydroxide

A

Fe(OH)3

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14
Q

Write the formula for the following compound - zinc nitride

A

ZN3N2

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15
Q

Write the formula for the following compound - lead(II) dichromate

A

PbCr2O7

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16
Q

Write the formula for the following compound - Mercury(II) sulfide

A

HgS

17
Q

Write the formula for the following compound - ammonium hydrogen sulfate

A

NH4HSO4

18
Q

Write the formula for the following compound - Sodium Hydrogen Carbonate

A

NoHCO3

19
Q

Give the formula of the anion in the following compound - calcium oxalate CaC2O4

A

C2O42-

20
Q

Give the formula of the anion in the following compound - potassium arsenate K3AsO4

A

AsO43-

21
Q

Give the formula of the anion in the following compound - magnesium iodate Mg(IO3)2

A

IO3-

22
Q

Give the formula of the cation in the following compound - rubidium carbonate Rb2CO3

A

Rb+

23
Q

Give the formula of the cation in the following compound - cadmium nitrate Cd(NO3)2

A

Cd2+

24
Q

Give the formula of the cation in the following compound - scandium chloride ScCl3

A

Sc3+

25
Q

How do you name a ionic compound?

A

The name of a positively charged metal ion (cation) is the same as the name of the metal.

26
Q

For simple non-metal ions (anions), the name of the ion is similar to that of the atom, but what does it end in?

A

ide

27
Q

For polyatomic anions containing oxygen, what will the name of the ion will usually end in?

A

‘-ite’ or ‘-ate’.

28
Q

How do you create a chemical formula containing polyatomic ions?

A
  • If different elements are present, then they are combined in a fixed ratio.
  • The group of atoms behaves as a single unit with a specific charge.
  • Subscripts are used to indicate the number of each kind of atom in the ion.
  • Example: a carbonate ion, CO32-
29
Q

What happens to the formula if more than one polyatomic ion is required to balance the charge?

A

Then it is placed in brackets with the required number written as a subscript after the brackets.
- Example: magnesium nitrate, Mg(NO3)2

30
Q

What are the two types of Crystalline Solids?

A

Crystalline and Amorphous

31
Q

Describe Crystalline Solids

A 
- Arranged in a regular manner 
– definite shape 
– Sharp (definite) melting point 
– Rigid 
– Break into pieces with plane surfaces 
– clean clevage (break into pieces with plane surfaces)
32
Q

Describe Amorphous Solids

A
  • Irregular in arrangement; can exist in different states and do not have a definite melting temperature
    – rigid and cannot be compressed
    – give an irregular clevage
33
Q

What is a Crystal Lattice?

A

The arrangement of ions in a regular, geometric structure is called a crystal lattice.

34
Q

What are Hydrated Ionic Compounds?

A
  • Sometimes water molecules become trapped within the ionic lattice.
  • These compounds are called hydrates, and produce water when they decompose upon heating.
35
Q

How is a formula written for Hydrated Ionic Compounds?

A
  • When the formula of a hydrated compound is written, the number of water molecules is also included, but separated from the ionic formula by a full stop.
  • Example: Iron(II) sulfate octahydrate is written as FeSO4.8H2O

4. Chemistry AOS2 (16 decks)

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