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Chemistry > C4 > Flashcards

C4 Flashcards

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1
Q

What group are alkali metals in

A

group 1

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2
Q

What are the 3 main properities of alkali metals

A
  • soft
  • low densisty
  • low melting points
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3
Q

How reactive are alkali metals

A

Very highly reactive

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4
Q

Which group one metals are most reactive

A

Metals further down the group

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5
Q

What happens to the properites of alkali metals as you go down the group

A
  • melting point lowers
  • boiling point lowers
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6
Q

Why are alkali metals so reactive?

A
  • Because they only have one electron to lose to become stable
  • 1 easier to lose than 3
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7
Q

Why are alkali metals more reactive futher down the group?

A

Because the 1 electron that has to be lost is further away from the atoms neucleous meaning yhat the electrostatic force of attraction is weaker as the period no. increaces making it more reacitve

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8
Q

What type of bond do group 1 atoms mostly create

A

ionic bonds with non metals

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9
Q

What are the common properties of ionic compounds using group 1 atoms

A

they are usually:
- white solids
- dissolve in water
- form colourless solutions

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10
Q

What happens to alkali metals when they react with water

A
  • A rigorous reaction occours
    (often sparks occour)
  • often the hydrogen gass is released it can ignite from the large amounts of energy
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11
Q

What are the products of alkali metals reacting with water

A

Metal hydroxide and hydrogen gass

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12
Q

What is produced when group 1 atoms react with chlorine gass

A

Chloride salts are produced

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13
Q

What are the properties of Chloride salts

made from group one metals

A

They are white

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14
Q

What is the product of group one metals reacting with oxygen?

A

Metal oxides

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15
Q

What can oxygen and lithium produce when reacted

A

Li2O

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16
Q

What products can sodium and oxygen produce

A

sodium oxide, Na2O or sodium peroxide, Na2O2

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17
Q

What products can potassium and oxygen produce

A

potassium peroxide, K2O2, or potassium superoxide, KO2.

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18
Q

What is the name for when two of the same atoms bond togeher in gasses

A

Diatomic

19
Q

Are hallogens diatomic

A

Yes

20
Q

What type of bonds are diatmoic bonds in hallogens

A

Covalent bonds

21
Q

What are the trends in hallogens as you go down the group

A
  • Melting and boiling point increace
  • reactivity decreaces
22
Q

What are hallogen ions called

A

Halides

23
Q

What type of ions are halides

A

anions

negitve

24
Q

What are the names of the main halides

A
  • floride
  • chloride
  • bromide
  • iodide
25
Q

What do hallogens mostly react with

A

group one ions

26
Q

What are displacement reactions

A

When a more reactive ion displaces a less reactive ion in an equation

27
Q

What is the displacement rule in halogens

A

More reactive hallogens will always displace less reactive hallogens

28
Q

What are the properites of nobles gasses

A
  • They are all clourless gasses
  • they are all inert
  • exist as single atoms
  • are not flammable
  • boiling point increaces down the group
29
Q

What colour is bromine water

A

organge

30
Q

What colour is chlorine water

A

yellow/ white

31
Q

What colour is iodine water

A

brown

32
Q

What colour are halide salts

A

white (solid)
colourless (dissolved)

33
Q

What colour is floride gas

A

yellow

34
Q

What colour is chlorine gas

A

green

35
Q

What colour and state is bromine at room temp

A

A red-brown volatile liquid

36
Q

What colour and state is iodine at room temp

A

Iodine is a grey coloured solid with purple vapours.

37
Q

in a flame test what colour deos lituim change to

A

red

38
Q

in a flame test what colour does sodium change to

A

Yellow

39
Q

in a flame test what colour does potassium change to

A

lilac

40
Q

in a flame test what colour does calcium change to

A

orange/red

41
Q

in a flame test what colour deos copper change to

A

green

42
Q

What is the order of the reactivity

A

Potassium
Sodium
Lithium
Calcium
Magnesium
Carbon
Zinc
Iron
Hydrogen
Copper
Gold

43
Q

General word equation reaction between a metal and an acid

A

Metal + acid ➔ salt + hydrogen

44
Q
A

Chemistry (6 decks)

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