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This is a from to ensure that you do not miss any specification points 1.13-1.20

1

Halogens

1

Halogens

1

What is group VII in the periodic table called?

alkali metals

halogens

noble gases

Transition metals

1

At room temperature Cl₂

is a gas

is a liquid

is a solid

2

Chlorine reacts with hydrogen to form a colourless gas, (HCl(g))that dissolves in water to form an acid called acid(HCl(aq)).

4

Chlorine gas is

Bromine liquid is

Iodine solid is dark

Iodine gas is

1

At room temperature, the physical state of bromine is:

A: solid

B: liquid

C: gas

1

Which is the most reactive element in Group 7?

is the most reactive element in group 7

6

6 mark halogen displacement question

Write this into your book as a model answer.

null

Order of reactivity: > >

Experiment

add (aqueous) chlorine to a solution of potassium bromide

 the solution turns as bromine is produced

Conclusion/Explanation and equation:

(so) chlorine bromine

Full equation

Cl₂ + 2KBr → Br₂ + 2KCl

equation

/ Cl₂ + 2Br⁻ → Br₂ + 2Cl⁻

Experiment

add (aqueous) bromine to a solution of potassium

iodide

 the solution turns as iodine is produced

Conclusion/Explanation and equation:

(so) bromine is reactive than

Br₂ + 2KI → I₂ + 2KBr

or ionic equation

Br₂ + 2I⁻ → I₂ + 2Br⁻

Experiment

add (aqueous) chlorine to a solution of potassium iodide

 the solution turns brown

 iodine is produced

Conclusion

(so) chlorine is more reactive than iodine

Cl₂ + 2KI → I₂ + 2KCl

Cl₂ + 2I⁻ → I₂ + 2Cl⁻

Mmuae Afoforo a Wobɛpaw:

displaces

ionic

more

brown

bromine

iodine

chlorine

orange

5

This question is about the element beryllium An atom of beryllium has a central that contains particles called protons and . Around these particles, there are orbiting in . An atom of beryllium has no charge because it contains equal numbers of and . The particles with the lowest mass in an atom of beryllium are called .

Mmuae Afoforo a Wobɛpaw:

electrons

protons

nucleus

neutrons

shells

2

Beryllium forms a compound with the formula Be(OH)₂. (i) How many different elements are there in Be(OH)₂? (1) (ii) What is the total number of atoms in the formula Be(OH)₂?

(1)

6

Sodium and potassium react with cold water to give similar products.

The electronic configuration of sodium is 2.8.1. The electronic configuration of potassium is 2.8.8.1. Explain the similarities and differences in the way sodium and potassium react with cold water by considering their reactions and their electronic configurations.

Write this into your book as a model answer

similarities

• both in the group (alkali metals)

• in a similar way

• Both have electron in their outer shell

• both produce and fizz (when reacted with

water)

• both produce a metal /alkaline solution (when

reacted with water)

differences

• potassium reactive

• potassium has a flame

• potassium outer electron from nucleus

• potassium has shells

• potassium has attraction of outer electron by nucleus

• potassium outer electron more easily

Mmuae Afoforo a Wobɛpaw:

more

hydroxide

lilac

one

lost

hydrogen

react

weaker

further

same

more

1

What is group I in the periodic table called?

alkali metals

halogens

noble gases

Transition metals

1

What is group 0 in the periodic table called?

alkali metals

halogens

noble gases

Transition metals

1

Alkali metals are

relatively soft compared to transition metals

relatively hard compared to transition metals

1

Alkali metals have

relatively high melting points

relatively low melting points

1

Which of the following is true of the reactions between alkali metals and water?

Fizzing is observed due to hydrogen gas being formed

Fizzing is observed due to oxygen gas being formed

Fizzing is observed due to carbon dioxide gas being formed

1

Option 1

Option 2

1

For the reactions of the group I metals and water the order of reactivity from most reactive to least reactive is

Li K Na

Li Na K

K Na Li

1

Rubidium would be ____________________

More reactive than lithium

Less reactive than lithium

1

From Li to K the number of electron shells between the nucleus and the outermost electron

Increases

Decreases

1

From Li to K the atomic radius

Increases

Decreases

1

From Li to K the force of attraction between the nucleus and the outermost electron

Increases

Decreases

1

From Li to K the outermost electron is lost

More easily

Less easily

1

As the outermost election is lost more easily the reactivity of the Group I metal

increases

decreases

1

At room temperature Br₂

is a gas

is a liquid

is a solid

1

At room temperature I₂

is a gas

is a liquid

is a solid

1

Chlorine gas is

Pale yellow

Green

Red - brown

Dark grey

1

Bromine is

Pale yellow

Green

Red - brown

Dark grey

1

Iodine is

Pale yellow

Green

Red - brown

Dark grey

1

Astatine is likely to be

Pale yellow

Green

Red - brown

Dark grey

1

As group VII is descended the melting point of the halogens

increases

decreases

1

What is used to test for chlorine gas

Damp red litmus paper

Damp blue litmus paper

1

What is the positive result for the chlorine test?

Damp red litmus paper turns blue then white

Damp blue litmus paper turns red then white.

1

Give the product of the following reaction Iron + chlorine →

Iron chlorine

Iron chloride

Iron chlorate

1

Give the product of the following reaction magnesium + bromine →

Magnesium bromide

Magnesium bromine

Amagnesium bromate

1

When the metal halides dissolve in water they form

Acidic solutions

Alkali solutions

Neutral solutions

1

When the hydrogen halides dissolve in water they form

Acidic solutions

Alkali solutions

Neutral solutions

1

Option 1

Option 2

3

Tick all the boxes where a reaction would take place

1

Option 1

Option 2

1

As group 7 is descended _______________________

The atomic radius decreases

The atomic radius increases

1

As group 7 is descended the tendency to gain an electron

increases

decreases

1

As group 7 is descended the halogens become

More reactive

Less reactive

1

From Fluorine to iodine the halogens become

More reactive

Less reactive

1

Periodic table

A

B

C

D

1

Which two of the following are properties of the alkali metals?

they form coloured compounds

they form hydroxides that are soluble in water

they have lower melting points than most usual metals

they react with water, releasing hydrogen

1

What did Mendeleev leave in his periodic table?

Gaps for undiscovered elements

I honestly can not think of another answer here

1

What did Mendeleev make with his periodic table?

Predictions that proved be correct

Predictions that proved to be incorrect

1

In the modern periodic table the elements are in order of increasing

atomic mass

atomic number

1

In the periodic table the elements are arranged in order of increasing atomic number, in rows called ________________

Groups

Periods

1

in the periodic table elements with similar properties are placed in the same vertical columns called ____________

Groups

Periods

1

Non-metals are found on the _________ hand side of the periodic table

Left

Right

1

The number of occupied shells is equal to the

period

group

1

The number electrons in the outer shell of an element is equal to the

period

group

6

1

Which letter shows iodine in cyclohexane?

1

Use the results of the displacement reactions to place the halogens in order of reactivity from most reactive to least reactive. Note 1. the halide ions would have to be added as a salt such as KCl, KBr and KI rather than the individual ions Note 2. The potassium halide solutions are all colourless. Note 3. The final colour of the sample depends upon the halogen present only.

	Starch	Colourless	Liquid	Solid
What can be used to test for iodine?
What colour (if any) is sodium chloride
What is the state of bromine at room temperature?
What is the state of iodine at room temperature?

	Pale green	Red - brown	Dark grey	Gas	Purple
What colour is chlorine?
What colour is bromine?
What colour is solid iodine ?
What is the state of chlorine at room temperature?
What colour are iodine vapours

	Sodium chloride	Sodium bromide	Sodium iodide
Chlorine water
Bromine water
Iodine water

	Br₂ organic layer	Br₂ water layer	Cl₂ organic layer	Cl₂ water layer	I₂ organic layer	I₂ water layer
1
2
3
4
5
6

	Starch	Colourless	Liquid	Solid
What can be used to test for iodine?
What colour (if any) is sodium chloride
What is the state of bromine at room temperature?
What is the state of iodine at room temperature?

	I₂	Cl₂	Br₂
Dark grey
Gas at room temperature
Liquid at room temperature
Pale green
Red - brown
Solid at room temperature

Year 9 Halogens and review 2025-2026

Year 9 Halogens and review 2025-2026

Halogens

Halogens

What is group VII in the periodic table called?

At room temperature Cl₂

At room temperature, the physical state of bromine is:

What is group I in the periodic table called?

What is group 0 in the periodic table called?

Alkali metals are

Alkali metals have

Which of the following is true of the reactions between alkali metals and water?

For the reactions of the group I metals and water the order of reactivity from most reactive to least reactive is

Rubidium would be ____________________

From Li to K the number of electron shells between the nucleus and the outermost electron

From Li to K the atomic radius

From Li to K the force of attraction between the nucleus and the outermost electron

From Li to K the outermost electron is lost

As the outermost election is lost more easily the reactivity of the Group I metal

At room temperature Br₂

At room temperature I₂

Chlorine gas is

Bromine is

Iodine is

Astatine is likely to be

As group VII is descended the melting point of the halogens

What is used to test for chlorine gas

What is the positive result for the chlorine test?

Give the product of the following reaction Iron + chlorine →

Give the product of the following reaction magnesium + bromine →

When the metal halides dissolve in water they form

When the hydrogen halides dissolve in water they form

Tick all the boxes where a reaction would take place

As group 7 is descended _______________________

As group 7 is descended the tendency to gain an electron

As group 7 is descended the halogens become

From Fluorine to iodine the halogens become

Periodic table

Which two of the following are properties of the alkali metals?

What did Mendeleev leave in his periodic table?

What did Mendeleev make with his periodic table?

In the modern periodic table the elements are in order of increasing

In the periodic table the elements are arranged in order of increasing atomic number, in rows called ________________

in the periodic table elements with similar properties are placed in the same vertical columns called ____________

Non-metals are found on the _________ hand side of the periodic table

The number of occupied shells is equal to the

The number electrons in the outer shell of an element is equal to the

Which letter shows iodine in cyclohexane?

Halogens

Use the diagrams to answer the questions

Halogens

What is group VII in the periodic table called?

At room temperature Cl₂

At room temperature, the physical state of bromine is:

What is group I in the periodic table called?

What is group 0 in the periodic table called?

Alkali metals are

Alkali metals have

Which of the following is true of the reactions between alkali metals and water?

For the reactions of the group I metals and water the order of reactivity from most reactive to least reactive is

Rubidium would be ____________________

From Li to K the number of electron shells between the nucleus and the outermost electron

From Li to K the atomic radius

From Li to K the force of attraction between the nucleus and the outermost electron

From Li to K the outermost electron is lost

As the outermost election is lost more easily the reactivity of the Group I metal

At room temperature Br₂

At room temperature I₂

Chlorine gas is

Bromine is

Iodine is

Astatine is likely to be

As group VII is descended the melting point of the halogens

What is used to test for chlorine gas

What is the positive result for the chlorine test?

Give the product of the following reaction Iron + chlorine →

Give the product of the following reaction magnesium + bromine →

When the metal halides dissolve in water they form

When the hydrogen halides dissolve in water they form

Tick all the boxes where a reaction would take place