Periodic table

Question 1

List the first 20 elements in order

Answer 1

Hydrogen, Helium, Lithium, Beryllium, Boron, Carbon, Nitrogen, oxygen, fluorine, neon, sodium, magnesium, aluminium, silicon, phosphorus, sulphur, chlorine, argon, potassium , calcium

Question 2

What is the symbol for iron

Answer 2

Fe

Question 3

What is the symbol for sodium

Answer 3

Na

Question 4

What is the symbol for potassium

Answer 4

K

Question 5

What is the definition of an element

Answer 5

A simple substance made up of one type of any atom

Question 6

What is the definition of a compound

Answer 6

A substance that can be split up into simpler substances, it contains an atom or more elements

Question 7

What is the definition of a mixture

Answer 7

2 or more substances jumbled up but not joined together. The substances are often separated from each other

Question 8

give an example of a physical change

Answer 8

Solid————> liquid = physical

Question 9

Define a chemical change

Answer 9

An example of a chemical change is when sodium reacts with water, it fizzes violently and the water changes purple

Question 10

What does argon look/smell like and what is it used for?

Answer 10

Argon is a colourless ,odourless gas that is used in light bulbs and double glazed windows

Question 11

What does chlorine look like and what is it used for

Answer 11

Chlorine is a yellow and green gas it kills bacteria and is used in swimming pools.

Question 12

How do you work out the mean?

Answer 12

Add up results then divide them by the amount of results there were.

Question 13

What is the definition of an outlier

Answer 13

It is another term for an anomalous result. It is a result that does follow the pattern of other results

Question 14

What is periodicity?

Answer 14

Periodicity is patterns across the periodic table.

Question 15

Is metal oxide an alkali or acid

Answer 15

Alkali

Question 16

Is non metal oxide an alkali or an acid

Answer 16

Acid

Question 17

Give an example of three alkali metals

Answer 17

Lithium, sodium and potassium

Question 18

List 5 physical properties of alkali metals

Answer 18

They are solids at room temperature 
They have low melting points 
They are a soft metal 
They have a low density 
They float in water

Question 19

List three chemical properties of alkali metals

Answer 19

Very reactive
Reacts with water
They have to be stored in oil

Question 20

How does lithium react with water

Answer 20

There are small bubbles

Question 21

How does sodium react with water

Answer 21

It fizzes and moves around

Question 22

How does potassium react with water

Answer 22

There are flames
It moves around
Very reactive

Question 23

What group are the alkali metals and what is the pattern

Answer 23

They are group 1 and they get more reactive as they go down the table

Question 24

List three examples of halogen

Answer 24

Chlorine
Bromine
Fluorine

Question 25

What is fluorine?

Answer 25

A pale yellow gas

Question 26

How does fluorine react with magnesium?

Answer 26

It burns very brightly and becomes MgF2

Question 27

At what temperature does chlorine melt?

Answer 27

-10 degrees

Question 28

What happens when chlorine reacts with magnesium?

Answer 28

It burns brightly

Question 29

What is bromine

Answer 29

A green gas

Question 30

At what temperature does bromine melt?

Answer 30

At -7 degrees

Question 31

What is 1 chemical property of halogens

Answer 31

They are very reactive elements

Question 32

What is the periodicity (pattern) of halogens

Answer 32

They get less reactive as you go down the group

Question 33

List two physical properties of halogens

Answer 33

They have a low melting and a low boiling point

Question 34

True or false: | Non metal oxides are less acidic than metal oxides

Answer 34

False, metal oxides are less acidic and non metal oxides are more acidic

Question 35

True or false: | As we go across the periodic table from left to right the elements get more acidic

Answer 35

True

Question 36

In a equation, when a non metal changes to "ide" what does this show

Answer 36

It shows that you now have a compound

Question 37

Iron + oxygen -----------> ?

Answer 37

Iron oxide

Question 38

Aluminium+ bromine----------->?

Answer 38

Aluminium bromide

Question 39

Sodium+ chlorine------------->

Answer 39

Sodium chloride

Question 40

Sodium + water ---------->

Answer 40

Sodium hydroxide + hydrogen

Question 41

Calcium + water--------->

Answer 41

Calcium hydroxide + hydrogen

Question 42

Zinc + sulphuric acid----------->

Answer 42

Zinc sulfate + hydrogen