Science 8 - Halogens/ Group 7 Elements Flashcards Preview

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Flashcards in Science 8 - Halogens/ Group 7 Elements Deck (25)
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1
Q

What group does the halogens belong to

A

Group 7

2
Q

List all halogen elements

A
Fluorine = Gas at room temperature 
Chlorine = Gas at room temperature
Bromine = Liquid at room temperature
Iodine = Solid at room temperature
Astatine = Solid at room temperature
3
Q

Fluorine

A

F

4
Q

Chlorine

A

Cl

5
Q

Bromine

A

Br

6
Q

Iodine

A

I

7
Q

Astatine

A

At

8
Q

Physical properties of fluorine

A

Yellow gas
Causes nose and Eye irritation
Can cause death

9
Q

Physical properties Chlorine

A

Green gas
Choking smell
Inhaling it can cause Burning in the eye and sinuses

10
Q

Chemical properties of fluorine

A

Most reactive halogen- ignites with anything it touches

11
Q

Chemical properties of chlorine

A

Kill bacteria

12
Q

Chemical properties of bromine

A

Toxic

Volatile

13
Q

Physical properties of bromine

A

Reddish-Brown

Liquid at room temp(one of two elements that are liquids)

14
Q

Physical properties of iodine

A

Volatile
Gives of a purple gas
Solid

15
Q

Chlorine uses

A

Swimming pools

Drinking water

16
Q

Bromine uses

A

Pesticides

17
Q

Iodine uses

A

Refrigerator
Toothpaste
Rocket fuels

18
Q

Boiling point of fluorine

A

-188.1 degrees Celsius

19
Q

Boiling point of chlorine

A

-34.04 degrees Celsius

20
Q

Boiling point of bromine

A

58.8 degrees Celsius

21
Q

Boiling point of iodine

A

184.3 degrees Celsius

22
Q

Boiling point of astatine

A

336.8 degrees Celsius

23
Q

What pattern shows in the column of the halogens: colours

A

They become darker as you move down the group

24
Q

What happens to the boiling pints as you move down the group of halogens

A

They increase temperature

25
Q

Reactivity of halogens order

Start with the most reactive

A

Fluorine
Chlorine
Bromine
Iodine