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Chemistry > 22 Periodicity > Flashcards

22 Periodicity Flashcards

1
Q

What is group 1 called?

A

Alkali metals

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2
Q

What is group 2 called?

A

Alkali earth metals

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3
Q

What is group 3 called?

A

Non- metals

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4
Q

What is the groups in between non- metals and metals called?
Why?

A

Metalloid
They can behave like metals and non- metals

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5
Q

What is group 7 called?

A

Halogens

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6
Q

What is group 8 called?

A

Noble gases

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7
Q

P3
What are the physical properties of Na, Mg, Al

A

Metallic shinny, conductors of electricity

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8
Q

What is silicone and what is it
Properties?

A

It is a metalloid
Can conduct electricity to some extent

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9
Q

What element is from. Three reacts with cold water?

A

Na, Mg, Cl

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10
Q

Describe the year action with sodium and water?
and give formula equation?

A

Reaction is: vigourous, fizzes rapidly
2Na(s) + 2H2O(l) -> 2NaOH(aq) + H(g)

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11
Q

Describe the reaction with magnesium and room temp water?
Give formula equation

A

Reaction is: slow, with a few bubbles
Mg(s) + 2H2O(l) -> Mg(OH)2(aq) +H2(g)

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12
Q

Why is magnesium a special case in terms of reaction with water?

A

When Mg reacts with steam
Reaction is: faster

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13
Q

What is the formula reaction between steam and magnesium?

A

Mg(s) + H2O(g) -> MgO(s) + H2(g)

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14
Q

What element from P3 reacts with oxygen?

A

All except Ar

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15
Q

Describe the reaction with sodium and oxygen (flame-> solid)
Write, formula equation

A

Yellow flame -> white sodium oxide
2Na(s) + 1/2O(g) -> Na2O(s)

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16
Q

Describe the reaction between magnesium burn in the air. (flame -> powder)
Write the formula reaction

A

Reaction: white flame-> white powder, magnesium oxide
2Mg(s) + O2(g) -> 2MgO(s)

17
Q

What reaction between aluminium and air?
Give the, formula equation

A

Burns brightly-> white powder
2Al(s) + 3O2(g) -> Al2O3(s)

18
Q

What is a special property of aluminium when reacted to oxygen?
(Reason for its use)

A

It is coated with an oxide layer
Protects from further reactions

19
Q

Write formula reaction of, silicone and oxygen.

A

Si(s) + O2(g)-> SiO2(s)

20
Q

What are the different types of phosphorus?

A

White and red

21
Q

What is the difference red and white phosphorus?

A

Red has heated before reacting with oxygen
White will spontaneously ignite in air

22
Q

What is the formula equation between phosphorus and oxygen in the air?
-Produced phosphorus PENToxide
-What does the PENT in oxide mean?

A

4P(s) + 5O2(g) -> P4O10(s)

The phosphorus oxidation number

23
Q

Describe reaction between sulphur and oxygen
producers, sulphur dioxide, gas
Write a formula equation

A

Blue flame-> colourless, gas
S(s) + O2(g) -> SO2(g)

24
Q

What are the metals that are ionic bonds with oxygen?
3

A

NaO, MgO, Al2O3

25
Q

How does aluminium get distorted by O2?

A

As O2- approaches, aluminium, small ion the electron charge is distorted adds covalent character

26
Q

What nonmetals have covalent bonding with oxygen?

A

Al2O3, SiO2, P4O10, SO3,SO2

27
Q

What are the 4 oxo-acids?
Describe what happens when you turn the acids into their anion

A

H3PO4- Phosphoric (V) acid
H2SO4
H2SO3 - sulfurous acid

H it’s taken away O is left with a negative charge with an overall charge in [brackets]

28
Q

What makes a strong oxo- acid? 3
O
-
Stability

A

-The more oxygen the stronger it is.
-has more of the ability to ionise
-The anion will more stable

29
Q

What are bases?
What’s distinguishes bases from alkali basis

A

Metal oxide/ hydroxide
An alkali bass is soluble in water

30
Q

What are Na2O, MgO in terms of base alkali base
What is Al2O3, SO2 in terms of base or alkali base

A

Alkali base soluble the water
Bass insoluble in water

31
Q

How is OH- made in a chemical reaction?
From a base or alkali base?

A

Alkali bass

32
Q

In period 3 what do nonmetals form with water, bases, acid or alkalis?

A

Acids oxides

33
Q

Does SiO2 dissolve in water?

A

No

34
Q

How to make salt and water?

A

Alkali base + water
Na2O, MgO

35
Q

What is a amphoteric oxide?

A

I don’t mean an oxide that can reacted both acid and alkali
It is treated as a alkali base and a normal base

Chemistry (13 decks)

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