Bonding Structure And Properties Of Matter Flashcards Preview

Chemistry > Bonding Structure And Properties Of Matter > Flashcards

Flashcards in Bonding Structure And Properties Of Matter Deck (30):
1

What is an ion

A charged atom

2

What is the charge on an ion formed from a group 2 element

+2

3

What charge on an ion from a group 7 element

-1

4

Does sodium chloride have a high or low boiling point

High

5

Why do ionic compounds conduct electricity when dissolved

The ions separate and are free to move which means charged particles are able to carry charge through the solution

6

What is the formula of the compound containing Al and OH ions only

Al(OH)3

7

What is a covalent bond

A chemical bond made by the sharing of a pair of electrons between two atoms

8

How many covalent bonds does a molecule of nitrogen have

3

9

What state are simple covalent structures at room temperature

Gas or liquid

10

Which forces are stronger in a simple molecular substance
Covalent bonds or intermolecular forces

Covalent bond

11

What forces need to be overcome to boil a simple molecular compound

Intermolecular

12

How are the repeating units in a polymer bonded together

By covalent bonding

13

At room temperature what state are polymers in

Solid

14

Describe the differences in the hardness and electrical conductivity of diamond and graphite

Diamond is harder and graphite conducts electricity

15

Which fullerene was the first to be discovered

Buckminster

16

Explain why most metals are malleable

Atoms can slide over each other which means they can be bent or hammered

17

What three factors are the strength of the forces between particles depend on

The material
Temperature
Pressure

18

What state of matter has a fixed lattice arrangement

Solid

19

What is the strength of attraction between the particles of a gas strong or weak

Weak

20

Describe what happens when a gas condenses

The particles of gas become a liquid

21

Describe how an ionic bond forms

A metal and a non metal transfer electrons to gain a full outer shell and become charged atoms/ions

22

Describe the structure of a crystal of sodium chloride

It forms a giant ionic lattice which is a honey comb structure held together by electrostatic forces due to the opposite charges

23

Explain why simple molecular compounds typically have low melting and boiling points

The forces of attraction are very weak

24

Describe the structure of a polymer

Long chains of repeating units

25

What type of bond occurs between carbon atoms in diamond

Covalent

26

Describe the structure of graphene

It has one layer joined in hexagonal shapes

27

Explain how fullerenes deliver drugs to the body

They ‘cage’ other molecules such as drugs which can be used to deliver to the body

28

Why can metals conduct electricity

They have charged particles from the outer shell which are called delocalised electrons which are free to move and carry charge through the structure

29

Why are metals solid at room temperature

They have strong electrostatic forces so a lot of energy is needed for bonds to be broken

30

How does the strength of forces between particles influence the temperature at which a substance changes state

If the forces are stronger it would be a higher temperature for it to change state as lots of energy is needed
(Visa Versa for weak forces)