C2 - Periodic Table

Question 1

What do the groups on the periodic table tell us?

Answer 1

They tell us how many electrons are on the outer shell.

Question 2

Are the groups across of down the periodic table?

Answer 2

Down

Question 3

What do the periods on the periodic table tell us?

Answer 3

The number of shells (or orbitals)

Question 4

Are periods across or down?

Answer 4

Across

Question 5

What are the group 1 elements called?

Answer 5

The alkali metals.

Question 6

How many electrons do the alkali metals have on their outer shell?

Answer 6

1

Question 7

What is the charge of an alkali metal ion?

Answer 7

+1

Question 8

What are the charges of neutrons, electrons and protons?

Answer 8

0, -1, +1

Question 9

What is group seven called on the periodic table?

Answer 9

The halogens

Question 10

Why do the alkali metals get more reactive the further you go down?

Answer 10

The further you go down, the more shells you gain the easier it is for the element to lose its outer electron.

Question 11

What are the charges of the halogens’ ions?

Answer 11

-1

Question 12

Why are the halogens more reactive at the top?

Answer 12

Due to it being easier to gain an electron due to being closer to the nucleus.

Question 13

What is a diatomic molecule?

Answer 13

A diatomic molecule is a element which goes around in pairs (Br2, H2)

Question 14

What is a poly atomic molecule?

Answer 14

It is an element which goes around in more than two. (S8, P4)

Question 15

What is a displacement reaction?

Answer 15

It is a reaction in which a more reactive element reacts with another less reactive element’s compound and displaces the other.
(AB + C > AC + B)

Question 16

What groups are the transition metals in?

Answer 16

Groups 3 - 12

Question 17

What is oxidation?

Answer 17

It is the chemical reaction in which an element loses electrons.

Question 18

What is reduction?

Answer 18

Is is the chemical reaction in which an element gains electrons.

Question 19

What is a spectator element?

Answer 19

It is an element in ionic equations that doesn’t change at all and stays exactly the same before the reaction as after. It isn’t shown in the ionic equation (is left out)

Question 20

In period 3 and so on of the periodic table, what is the max number of outer electrons?

Answer 20

18

Question 21

Who created our modern periodic table?

Answer 21

Dmitri Mendeleev

Question 22

How did Mendeleev order the periodic table?

Answer 22

based off atomic mass (across) and similar chemical reactions (down)

Question 23

Why did Mendeleev leave holes in the periodic table?

Answer 23

Because there were undiscovered elements at the time that he some how knew about and predicted their presence

Question 24

What is the main difference between the modern periodic table and Mendeleev’s periodic table?

Answer 24

The modern periodic table is sorted by atomic number whereas mendeleev’s table was sorted by atomic mass.

Question 25

What is the only transition metal that isn’t solid?

Answer 25

Mercury (liquid)

Question 26

What properties do the halogens have?

Answer 26

They are colourful, non metal and are less reactive the lower you go down

Question 27

What is a redox reaction?

Answer 27

It is a reaction that electrons are gained (reduction) or when electrons are lost (oxidation)

Question 28

What colour is chlorine in water?

Answer 28

Pale green

Question 29

What colour is bromine in water?

Answer 29

Orange

Question 30

What colour is iodine in water?

Answer 30

Brown

Question 31

What colour is chlorine in cyclohexane?

Answer 31

Pale green

Question 32

What colour is bromine in cyclohexane?

Answer 32

Brown

Question 33

What colour is iodine in cyclohexane?

Answer 33

Violet

Question 34

What are properties of alkali metals?

Answer 34

Low density, low boiling point, very reactive, good conductors of electricity, quick to tarnish

Question 35

What are the properties of the transition metals?

Answer 35

High density, high boiling point, not very reactive, shiny, metallic, good conductors of electricity and heat

Question 36

What is the no. of electrons in the outer shell of the halogens?

Answer 36

7

Question 37

What is the ionic charge of the halogens?

Answer 37

-1

Question 38

What does atomic mass tell us?

Answer 38

The mass of the atom (protons and neutrons)

Question 39

What does the atomic number tell us?

Answer 39

The number of protons

Question 40

How did Johann Wolfgang organise elements?

Answer 40

He put them into triads based off of their atomic mass.