History and explanation of periodic table

Question 1

State the type of ion non metals form

Answer 1

Non Metals gain electrons to form negative ions

Question 2

State the type of ion non metals form

Answer 2

Non metals gain gain electrons to form negative ions

Question 3

Describe the physical properties of metals

Answer 3

high melting points.
good conductors of electricity.
good conductors of heat.
high density.
malleable.
ductile.

Question 4

Describe the chemical properties of metals

Answer 4

The density of metals is usually high.
Metals form an alloy with other metals or non – metals.
Some metals react with air and corrode. …
Generally, metals are in a solid state at room temperature.

Question 5

Explain why the noble gases (group 0) are unreactive, in terms of their outer electrons.

Answer 5

The atoms of noble gases already have complete outer shells, so they have no tendency to lose, gain, or share electrons.

Question 6

Describe the trend in boiling point going down group 0 does it go up pr down as you go down the group?

Answer 6

Up.
Boiling point increases Helium at top has lowest boiling point. As you down the group atoms become larger so intermolecular forces between the atoms grow stronger and more energy is needed to overcome forces

Question 7

Describe the physical properties of non metals

Answer 7

Dull
Low melting points
Poor conductors of electricity
Poor conductors of heat
Brittle

Question 8

Describe the chemical properties of non metals

Answer 8

React more with metals than with non metals
Do not react with air at room temperature
Not malleable and ductile
Form oxides that are acidic

Question 9

Explain how the atomic structure of metals and non-metals relates to their position in the
periodic table.

Answer 9

Metals are on left mostly in Groups 1,2 or 3 as will have 1,2 or 3 electrons in outer shell.
Non metals are in groups 5,6,7 on right as have 5,6 or 7 electrons in outer shell

Question 10

Explain how the reactions of elements are related to the arrangement of electrons in their
atoms and therefore their atomic number.

Answer 10

The atoms of all group 1 elements have similar chemical properties and reactions because they all have one electron in their outer shell. Similarly, the atoms of all group 7 elements have similar chemical properties and reactions to each other, because they all have seven electrons in their outer shell.
As you move down the elements in the group 1 the non alkali metals get more reactive but as you move up Group 7 Halogens they get more reactive

Question 11

Predict properties from trends down Group 0 noble gases

Answer 11

As you go down
Boiling point increases
Higher density
Get less reactive

Question 12

State what the transition elements are.

Answer 12

In central part of periodic table eg Iron

Question 13

Which has a higher melting point a Group 1 metal or a transition Metal?

Answer 13

Transition metal

Question 14

Which is stronger a Group 1 metal or a transition Metal?

Answer 14

Transition metal

Question 15

Which is harder a Group 1 metal or a Transition metal

Answer 15

Transition metal

Question 16

Which reacts with oxygen most quickly a Group 1 metal or a transition metal?

Answer 16

Group 1 metal

Question 17

Which reacts with water most quickly

Answer 17

Group 1 metal

Question 18

Which reacts with a halogen most violently a group 1 metal or a transition metal

Answer 18

Group 1 metal

Question 19

What are the Typical properties of transition metals

Answer 19

high melting points
high densities
they form coloured compounds
they (and their compounds) can act as catalysts

Question 20

Explain displacement reactions involving halogens and solutions of their salts.

Answer 20

When chlorine (as a gas or dissolved in water) is added to sodium bromide solution, the chlorine takes the place of the bromine. Because chlorine is more reactive than bromine, it displaces bromine from sodium bromide.

The solution turns brown. This brown colour is the displaced bromine. The chlorine has gone to form sodium chloride.