Atomic Structure And The Periodic Table

Question 1

What does the mass number tell you about an Atom

Answer 1

The total number of protons and neutrons

Question 2

What is the definition of an element

Answer 2

A substance that consists of one atom

Question 3

Describe what a compound is

Answer 3

A substance made of two or more elements which are chemically bonded

Question 4

What does a compound formed from a metal and a non-metal consist of

Answer 4

Ions

Question 5

What is a mixture

Answer 5

Two or more elements or compounds mixed together

Question 6

I’m separation technique that can be used to separate soluble solid from solution

Answer 6

Evaporation or crystallisation

Question 7

Which technique could you use to separate a mixture of liquids with a similar boiling points

Answer 7

Fractional distillation

Question 8

Describe JJ Thompson’s model of the atom

Answer 8

Plum pudding model a ball of positive charge with electron stuck in it

Question 9

A) how many electrons on the first shell

B) how many electrons on the second shell

Answer 9

A is two and B is 8

Question 10

Discovery supported Mendeleev of decision not to post elements in order of relative atomic mass

Answer 10

The Discovery of isotopes

Question 11

What kind of ions do metals form

Answer 11

Positive

Question 12

Give three physical properties of metals

Answer 12

Strong malleable conduct electricity high melting and boiling point

Question 13

Which products is formed when lithium reacts oxygen

Answer 13

Lithium oxide

Question 14

Do halide ions have a positive or negative charge

Answer 14

Negative

Question 15

In which group of the periodic table are the noble gasses

Answer 15

Group 0

Question 16

What is found in atoms

Answer 16

Nucleus
Protons
Neutrons 
Electrons
Empty space
Energy shells

Question 17

What is the relative atomic mass of a neutron

Answer 17

1

Question 18

True or false elements only contain atoms with the same number of protons

Answer 18

True

Question 19

Define relative atomic mass

Answer 19

The amount of protons an atom has

Question 20

Give the formula for

1) carbon dioxide
2) sodium carbonate
3) hydrochloric acid

Answer 20

1) CO2
2) NaCO3
3) HCl

Question 21

What’s the difference between a compound and a mixture

Answer 21

Compounds are chemically bonded and mixtures are not

Question 22

What is the name of the patterns of spots generated by paper chromatography

Answer 22

Chromatogram

Question 23

Give the name of a method used to separate an insoluble solid from a liquid

Answer 23

Filtration

Question 24

Describe how different substances are separated by fractional distillation

Answer 24

The substances have different boiling points and evaporate and condense at different times

Question 25

Who demonstrated that the plum pudding model was wrong

Answer 25

Rutherford as he discovered positively charges particles in the nucleus

Question 26

What did Bohr’s nuclear model of the atom suggest

Answer 26

Electrons orbit around the nucleus in fixed shells

Question 27

Give the electronic structure of A) helium B) carbon C) sodium

Answer 27

A) 2 B) 2,4 C) 2,8,1

Question 28

Why did Mendeleev leave gaps in the periodic table

Answer 28

Gaps were left in the table to make sure that elements with similar properties stayed in the same groups and some elements were not discovered

Question 29

What is the name given to verifiable columns in the periodic table

Answer 29

Groups

Question 30

How are the group number and the number of electrons in the outer shell of an element related

Answer 30

The group number is how many electrons it needs to gain or lose for a full outer shell

Question 31

Where are non metals in the periodic table

Answer 31

On the right side

Question 32

State three trend in group 1 as you go down the group

Answer 32

Increasing in reactivity Low melting point High relative atomic mass

Question 33

State the products of the reaction of sodium and water

Answer 33

Sodium hydroxide and hydrogen

Question 34

State three trends as you go down group 7

Answer 34

Less reactive High melting point High relative atomic masses

Question 35

What colour gas does fluorine produce

Answer 35

Yellow

Question 36

What colour has does chlorine produce

Answer 36

Dense green

Question 37

What colour gas does bromine produce

Answer 37

Red/brown volatile liquid

Question 38

What coloured gas does iodine produce

Answer 38

Purple vapour or it can produce crystals

Question 39

What is the charge of the ions that halogens form when they react with metals

Answer 39

1-

Question 40

What are the 3 trends as you go down for noble gasses

Answer 40

Boiling points increase Increase in the number of electrons Greater intermolecular forces