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Flashcards in Atomic Structure And The Periodic Table Deck (40):
1

What does the mass number tell you about an Atom

The total number of protons and neutrons

2

What is the definition of an element

A substance that consists of one atom

3

Describe what a compound is

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

4

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

Ions

5

What is a mixture

Two or more elements or compounds mixed together

6

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

Evaporation or crystallisation

7

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

Fractional distillation

8

Describe JJ Thompson’s model of the atom

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

9

A) how many electrons on the first shell
B) how many electrons on the second shell

A is two and B is 8

10

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

The Discovery of isotopes

11

What kind of ions do metals form

Positive

12

Give three physical properties of metals

Strong malleable conduct electricity high melting and boiling point

13

Which products is formed when lithium reacts oxygen

Lithium oxide

14

Do halide ions have a positive or negative charge

Negative

15

In which group of the periodic table are the noble gasses

Group 0

16

What is found in atoms

Nucleus
Protons
Neutrons
Electrons
Empty space
Energy shells

17

What is the relative atomic mass of a neutron

1

18

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

True

19

Define relative atomic mass

The amount of protons an atom has

20

Give the formula for
1) carbon dioxide
2) sodium carbonate
3) hydrochloric acid

1) CO2
2)NaCO3
3)HCl

21

What’s the difference between a compound and a mixture

Compounds are chemically bonded and mixtures are not

22

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

Chromatogram

23

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

Filtration

24

Describe how different substances are separated by fractional distillation

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

25

Who demonstrated that the plum pudding model was wrong

Rutherford as he discovered positively charges particles in the nucleus

26

What did Bohr’s nuclear model of the atom suggest

Electrons orbit around the nucleus in fixed shells

27

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

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

28

Why did Mendeleev leave gaps in the periodic table

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

29

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

Groups

30

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

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

31

Where are non metals in the periodic table

On the right side

32

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

Increasing in reactivity
Low melting point
High relative atomic mass

33

State the products of the reaction of sodium and water

Sodium hydroxide and hydrogen

34

State three trends as you go down group 7

Less reactive
High melting point
High relative atomic masses

35

What colour gas does fluorine produce

Yellow

36

What colour has does chlorine produce

Dense green

37

What colour gas does bromine produce

Red/brown volatile liquid

38

What coloured gas does iodine produce

Purple vapour or it can produce crystals

39

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

1-

40

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

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