Chemistry

Question 1

What is the negative charge

Answer 1

Electron

Question 2

What is neutral charge

Answer 2

Neutron

Question 3

What is positive chatge

Answer 3

Proton

Question 4

Centre of atom?

Answer 4

Nucleus

Question 5

Elements are made up of

Answer 5

1 atom

Question 6

Electron does what around the nucleus

Answer 6

Orbits

Question 7

Nucleus contains what

Answer 7

Proton + neutron

Question 8

Amu of electron

Answer 8

Almost 0

Question 9

Amu of proton

Answer 9

1

Question 10

AMu of neutron

Answer 10

1

Question 11

How to calcite atomic number

Answer 11

How many protons

Question 12

How to calculate mass number

Answer 12

Proton + neutron

Question 13

How to calculate number of neutrons

Answer 13

Mass number - atomic number

Mass number - how many protons

Question 14

Layers around the nucleus’s called

Answer 14

Electron shells or energy levels

Question 15

Last shell is called what

Answer 15

Outer shell

Question 16

Which group conducts heat and electricity

Answer 16

Transition metals

Question 17

Noble gases properties

Answer 17

Are non metals

Are very unreactive

Question 18

Which group are all non metals and react quickly with other metals

Answer 18

Halogens

Question 19

Soft dull metals, shiny when cut, react with water, so reactive kept under oil

Answer 19

Alkali METALS

Question 20

Only 2 liquids in teh periodic table are

Answer 20

Mercury and bromine