Classifcstion Of Living Matter

Question 1

What are the horizontal rows called

Answer 1

Rows , periods

Question 2

What is the atomic number

Answer 2

Number of protons in the nucleus . This number identifies the element

Question 3

What number identifies the element

Answer 3

Atomic number

Question 4

What is the mass number

Answer 4

Number of protons and neutrons together in the nucleus

Question 5

Describe elements in general like magnesium , oxygen and mercury

Answer 5

Simpler substances, that can’t be broken into simpler substances by chemical means

Question 6

What group are sodium and potassium in and decribe them

Answer 6

Group 1 , light metals , highly reactive with water - give off hydrogen when doing so

Question 7

What group are chlorine and fluorine in and decribe them

Answer 7

Group 7 , non metals , react with metals to form salts , poisonous

Question 8

What group are helium and argon in and decribe them

Answer 8

Group 0 , inert gasss , room Tempreature , non reactive with other elements (few rare exceptions)

Question 9

What group are magnesium and calcium in and decribe them

Answer 9

2, silvery metals , react with acids to form hydrogen gas

Question 10

What is an element

Answer 10

A substance that can’t be broken into simpler substances by chemical means

Question 11

What is a compound

Answer 11

2/ more elements joined together by chemical bond . Can be broken down into simpler substances by chemical means

Question 12

What substances have oxygen present

Answer 12

Ate / ite / oxide

Question 13

What substances don’t have oxygen present

Answer 13

Ide

Question 14

What is water made of

Answer 14

Hydrogen and oxygen

Question 15

What 2 groups van elements be classified as

Answer 15

Metals and non metals

Question 16

Name 5 qualities of metal substances

Answer 16

Luster 
High densities
Malleable
Ductile
Conducts heat/ electricity

Question 17

Give 5 qualities of non metals

Answer 17

Dull/ no luster
Low densities
Brittle
Not ductile
Insulator

Question 18

Where are metals and no metals on the table

Answer 18

Metals on left

Non metals on right

Question 19

How would a compound be seperated

Answer 19

My chemical means

Question 20

How would a mixture be seperated

Answer 20

By physical means

Question 21

Give 5 qualities of mixtures

Answer 21

Impure substance
No energy absorbed when substances mixed
Physically seperated
Consists of any substance added together
Substances mix in any quantities / proportions

Question 22

Give 5 qualities of compounds

Answer 22

Pure substance
Energy is absorbed when elements combine to form compounds
Chemically seperated
Consist of elements bounded together chemically
Constituent elements combine in fixed properties

Question 23

How can sorting be possible

Answer 23

Must consist of 2 or more solids to seperate

Particles of mixed substance must be big enough for tweezers

Question 24

How can a substance be seperated by a magnet

Answer 24

One of the substances must be magnetic

Question 25

How can you seperated by filtration

Answer 25

Mixture must consist of liquid and insoluble solid

Question 26

How can substances be seperated by filtration

Answer 26

Mixture must consist of liquid and insoluble solid

Question 27

How can mixtures be seperated in a spreading funnel

Answer 27

Mixture must consist of 2/more imicbale liquids (different densities )

Question 28

How can you seperate mixtures by distillation

Answer 28

Mixture must consist of 2 miscible liquids | Liquids seperated by different boiling points

Question 29

What are the vertical rows called

Answer 29

Groups , coloums