periodic table

Question 1

what 2 main categories are the periodic table divided into?

Answer 1

metals and non metals

Question 2

describes some properties of metals

Answer 2

solid ( except mercury )
strong
high melting point
conducts electricity well
ductile

Question 3

what does ductile mean?

Answer 3

can be stretched into shapes

Question 4

describe some properties of non metals

Answer 4

low melting point
not as strong
doesnt conduct electricity well

Question 5

what is the periodic table arranged into?

Answer 5

groups and periods

Question 6

what is the column going down on the periodic table called?

Answer 6

group

Question 7

what is the column going across on the periodic table called?

Answer 7

period

Question 8

what are the 4 main groups on the periodic table

Answer 8

group 1- alkali metals
transition metals
group 8/0- noble gases
group 7 halogens

Question 9

what is an element?

Answer 9

a substance made from only one type of atom

Question 10

how many elements are in the periodic table

Answer 10

118

Question 11

what is a compound

Answer 11

made up of 2 or more DIFFERENT atoms CHEMICALLY joined

Question 12

what is a mixture

Answer 12

two or more substances physically mixed

Question 13

what can passing electricty through a compound do?

Answer 13

break it down into it elements

separate those elements

Question 14

what is the process of breaking down elements called

Answer 14

electrolysis

Question 15

what materials are electrodes made from

Answer 15

graphite

Question 16

what is the difference between a compound and mixture

Answer 16

compound not easy to separate

compound is chemically joined

Question 17

what does the name of a compound tell us

Answer 17

what elements are within the compound

Question 18

what does the first part of the name of the compound tell us

Answer 18

the first element

Question 19

what does the 2nd part of the name of the compound tell us

Answer 19

the 2nd element

Question 20

what does the 3rd part of the name of the compound tell us

Answer 20

if a 3rd element is present

Question 21

what does ‘ide’ in the 3rd part of the name of the compound tell us

Answer 21

that only 2 elements are present

Question 22

what does ‘ate’ or ‘ite’ in the 3rd part of the name of the compound tell us?

Answer 22

that oxygen is also present in the compound

Question 23

which elements are always found in oxides

Answer 23

oxygen

Question 24

which elements are alwyas found in suphates

Answer 24

oxygen and sulphur

Question 25

which elements are always found in carbonates?

Answer 25

oxygen and carbon

Question 26

how can properties of matter be seperated

Answer 26

seperated into physical propterties and chemical properties

Question 27

describe what is meant by physical properties

Answer 27

things which can be observed or measured without changing the identity of the substance

Question 28

give examples of physical properties

Answer 28

appearance, texture, colour, smell, melting point, density, solubility

Question 29

describe what is meant by chemical properties

Answer 29

can be observed or measured as a substance changes in identity

Question 30

give examples of chemical properties

Answer 30

ability to burn , reactivity