Practice Questions Flashcards

1
Q

Which two substances out of these have intermolecular forces

Diamond
Magnesium

Poly(ethene)

Sodium chloride

Water

A

Water and poly(ethene)

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2
Q

What is carbon dioxide,magnesium oxide and silicon dioxide made up of

A

Carbon dioxide and silicon dioxide are made up of atoms but magnesium dioxide is made of ions

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3
Q

What type of structure is silicon dioxide and magnesium oxide

A

They are giant structures

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4
Q

What type of molecules and force does carbon dioxide have

A

Small molecules with weak intermolecular forces

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5
Q

What is similar between the bonds in carbon dioxide silicon dioxide and magnesium oxide

A

All three compounds have strong bonds

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6
Q

What are carbon dioxide and silicon dioxide formed from

A

Two non metals

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7
Q

What does it mean if carbon dioxide and silicon dioxide are formed from two non metals

A

Any bonds formed are covalent

Electron pairs are shared between atoms

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8
Q

What is magnesium oxide formed from

A

A metal and a non metal

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9
Q

What does it mean if magnesium oxide is formed from a metal and non metal

A

Bonds in magnesium oxide are ionic

Two Electrons are transferred from magnesium to oxygen

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10
Q

What type of bonds does silicon dioxide have

A

Single bonds

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11
Q

How many bonds does each silicon in silicon dioxide form

A

Four bonds

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12
Q

How many bonds does each oxygen form in silicon dioxide

A

Two bonds for each oxygen

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13
Q

What type of bonds are in carbon dioxide

A

Double bonds

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14
Q

How many double bonds does carbon form in carbon dioxide

A

Two

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15
Q

How many double bonds does oxygen male in carbon dioxide

A

One

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16
Q

Which two are the properties of transition metals

They are soft metals

They form colourless compounds

They form ions with different charges

They have high melting point

They have low densities

A

They form ions with different charges

They have high melting points