Oxides, Chlorides And Oxides Flashcards Preview

Chemistry Unit 1 > Oxides, Chlorides And Oxides > Flashcards

Flashcards in Oxides, Chlorides And Oxides Deck (11)
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0
Q

What properties do nonmetallic oxides have

A

Covalent
Acidic
Some dissolve in water to form acidic solutions

1
Q

What properties do metal oxides usually have

A

Ionic
Basic
Neutralise acids = water and salt

2
Q

As the electro negativity between the oxygen and the other element decreases the

A

Bonding becomes less ionic

3
Q

Aluminium oxide is said to be amphoteric

A

Have both acidic and alkali properties neutralise boy acid and alkali to get salt and water

4
Q

Most metal chlorides have

A

Ionic bonding.

Dissolve in water without reacting

5
Q

Some covalent chlorides hydrolyse in water to

A

Produce fumes of hydrogen peroxide (white fumes)

6
Q

Aluminium chloride is covalent but is hydrilysed to fumes

A

Solid AlO sublimes changing directly from solid to gas

7
Q

Carbon tetra chloride is a covalent chloride with

A

Four polar bonds
Coz tetrahedral shape and symmetry it is overall non polar
Immiscible in water

8
Q

Most metal hydrides have

A

Ionic bonding
Contain hydride ion H-
React wi water to make hydrogen gas
Leaves an alkali solution

9
Q

Th hydride ion acts as a

A

Reducing agent ( reduce aldehydes to primary alcohols)

10
Q

Electrolysis of molten ionic hydrides produces

A

Hydrogen gas as the positive electrode