periodic table

Question 1

what is an element

Answer 1

it is a substance made up from only one type of atom

Question 2

approximately how many elements are there

Answer 2

118

Question 3

Name the Russian scientist who began to put together the periodic table as we know it today

Answer 3

Mendeleev

Question 4

How did he group the elements together?

Answer 4

He grouped them together based on their chemical properties

Question 5

He left some spaces in his periodic table. Why was this?

Answer 5

He knew that there must be elements that hadn’t been discovered yet so he left spaces to allow them to be inserted in the correct places easily.

Question 6

is potassium a metal or non-metal

Answer 6

metal

Question 7

is Argon a metal or non-metal

Answer 7

non-metal

Question 8

what is the symbol for Bromine

Answer 8

Br

Question 9

what is the symbol for Phosphorous

Answer 9

P

Question 10

will all metals and non-metal conduct electricity

Answer 10

Metal will conduct electricity, non-metals won’t except carbon in the form of graphite

Question 11

what are the four groups that the periodic table are grouped into

Answer 11

Alkali metals
Transition metals
Halogens
Noble gases

Question 12

what group of the periodic table is iron in

Answer 12

Transition metal

Question 13

what group of the periodic table is Helium in

Answer 13

Noble gases

Question 14

what group of the periodic table is potassium in

Answer 14

Alkali metals

Question 15

what group of the periodic table is Fluorine in

Answer 15

Halogens

Question 16

Describe the appearance of the alkali metals.

Answer 16

Dull grey metals. Soft to cut

Question 17

The alkali metals are stored in oil. Why is this?

Answer 17

They are very reactive with water in the air

Question 18

Where can the noble gases be found?

Answer 18

Small quantities in the air

Question 19

What can we say about the general reactivity of the noble gases?

Answer 19

They are very unreactive

Question 20

how did the noble gases became known as ‘noble’ gases.

Answer 20

They are highly unreactive, therefore noble as they are not reacting to other elements

Question 21

Name 4 halogens.

Answer 21

Fluorine, Chlorine, Bromine, Iodine

Question 22

What can be said about the general reactivity of halogens?

Answer 22

Very reactive, reducing in activity as you go down the group

Question 23

All substances are made up of trillions of tiny particles called……

Answer 23

atoms