Chemistry

Question 1

The electron config of an atom

Answer 1

How many electrons are in each shell
Shell1- 2
2- 8
3-18
4 -32

Question 2

Electron config of bromjne

Answer 2

35 protons

2-8-18-7

Question 3

Atomic number is the same as

Answer 3

Number of protons

Question 4

Cation and anione

Answer 4

Cation= negative

Anion=postive

Question 5

Groups i need to know

Answer 5

Group 1= alkali metal
Group 2 = alkine earth metals
Group 18= noble gases
Group 17= hallogents

Question 6

Coveant bonding

Answer 6

Covenant bonding occrus when non metal atoms bond with non metal atoms. They do this by sharing electrons

Question 7

Ionic bonding

Answer 7

Ionic bonding occurs when non metal atoms bond with metal atoms

Question 8

Metallic bonding

Answer 8

Metallic bonding occurs when mettalic atoms bond with other mettalic atoms

Question 9

Group charges

Answer 9

Group 1= +1
2 = +2
13= +3
14= -4 or +4
15= -3
16= -2
17= -1
18= 0

Question 10

Formulaic eqautions eg

Answer 10

Oxygen is charge -2 and aluminium is +3 so to create a balanced formula. There has to be 3 oxygens to make -6 and 2 aluminums to create +6 6-6 =0
= Al2O3

Question 11

How to know mass number

Answer 11

Protons+ nuetrons

Question 12

How to know number of nuetrons

Answer 12

Mass no- protons

Question 13

Different types of lattice carbon

Answer 13

There can be diamond, graphite or lucky balls carbon lattices

Question 14

Fireworks

Answer 14

Metals are the reason for the change of colour. The colour occurs due to the electrons dropping back down after being jumped around by heat energy

Question 15

Isotopes

Answer 15

An isotope will always remain its atomic number will stay the same but its atomic mass can change eg

12. 13. 14
        C. C. C
13. 6. 6

Question 16

Reaction of BROMINE with hydrogen sulfide (H2S)

Answer 16

BR2+ H2 s -> S + 2HBr

Question 17

Malleble

Answer 17

A metal that is able to be hammerd or pressed into a shape without breaking

Question 18

Allotrope

Answer 18

Two or more different physical forms in which an element can exist

Question 19

Why is hydrogen in group one?

Answer 19

Because hydrogen has only one electron

Question 20

What determines the postion in a periodic table

Answer 20

Period, group , number of protons and what family it belongs to

Question 21

Lattice

Answer 21

When each ion is surronded by ions of the opposite chargr which builds a 3d structurr

Question 22

5 items that make an atom

Answer 22

Proton, nucleus, nuetron, electron and the atom

Question 23

Alkai metal reaction

Answer 23

Alkali metals are very reactive