C2 Flashcards

1
Q

What is an example of Giant structures?

A

diamond, silicon dioxide

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2
Q

What are the properties of giant structures?

A

They have high melting and boiling points due to strong bonds

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3
Q

What do ionic bonds form between?

A

metal and non-metal

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4
Q

What the structure of an ionic bond?

A

giant lattice structure

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5
Q

Do ionic bonds conduct electricity?

A

dont conduct as solids but do if molten

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6
Q

What are the properties of ionic bonds?

A

high melting and boiling points and strong bonds

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7
Q

What do covalent bonds form between?

A

non-metals

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8
Q

What is the structure of covalent bonds?

A

giant or molecular

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9
Q

What are the differences between giant and molecular covalent compounds?

A

Giant have a high melting and boiling points due to strong electrostatic forces. molecular have low melting and boiling points due to there weak intermolecular forces.

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10
Q

Do covalent bonds conduct electricity?

A

No because they have no mobile electrons

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11
Q

What do metallic bonds form between?

A

metals

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12
Q

Why is there an electrostatic attraction in metallic bonds?

A

positive metal ion and negative sea of electrons

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13
Q

What is the structure of metallic bonds?

A

always giant

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14
Q

What are the properties of metallic bonds?

A

high melting and boiling points

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15
Q

do metallic bonds conduct electricity?

A

yes due to mobile electrons

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16
Q

bonus property of metal bonds?

A

malleable due to layers of ions sliding

17
Q

what charge is metals usally?

18
Q

Wat charge is a non-metal usally?

19
Q

What is an alloy?

A

mixture of two or more elements in which one has to be an element

20
Q

Whats happens to electrons in a covalent bonds?

A

Shares Elctrons

21
Q

What happens to electrons in ionic bonds?

A

losses or gains an electron

22
Q

Do giant covalent structures have intermolecular forces

23
Q

What type of bond shares electrons

24
Q

What type of bonds gains or losses an electron

25
Do polymers have intermolecular forces
yes
26
do polymers have high melting and boiling points?
yes
27
which bond gains or losses electrons?
ionic
28
What are the four state symbols?
(s) for solid, (l) for liquid, (g) is for gas and (aq) for aqueous solution
29
What is an aqueous solution?
a substance where the solvent is water
30
What is an allotrope?
properties of some chemical elements to exist in two or more different forms, in the same physical state. eg diamond, coal, graphite are all allotropes of carbon
31
what is fullerene?
A fullerene is an allotrope of carbon whose molecules consist of carbon atoms connected by single and double bonds so as to form a closed or partially closed mesh
32
Give some uses for nanoparticles
medicines, electronics, bioengineering,