Periodic Table

Question 1

Periodic table

Answer 1

an arrangement of elements in periods and groups and in order of increasing proton number/atomic number

Question 2

What is the similarities between the electronic configuration of elements in the same group

Answer 2

They have the same number of electrons in their outer shell

Question 3

What is the trend going down a metal’s group

Answer 3

More reactive as it is easier to lose electrons, bcus the attraction between protons and electrons is weaker

Question 4

What is the trend going down a non-metal’s group

Answer 4

They are less reactive as it is harder for the protons to attract electrons as the atomic radius increases

Question 5

What are the group one metals described as and what are their trends going down the group

Answer 5

They’re called the alkali metals
- relatively soft
- decreasing melting point
- increasing density
- increasing reactivity with water

Question 6

What are the group 7 metals described as and what are their trends going down the group

Answer 6

They’re called the halogens
- diatomic non-metals
- increasing density
- decreasing reactivity

Question 7

What is the appearance of halogens at room and pressure

Answer 7

Chlorine - pale yellow green - gas
Bromine - red brown - liquid
Iodine - grey black - solid

Question 8

Explain the displacement reactions of halogens with other halide ions

Answer 8

The more reactive halogen displaces the less reactive one and the solution turns into the colour of the displaced halogen

Question 9

Transition metals properties

Answer 9

• have high densities
• have high melting points
• form coloured compounds
• often act as catalysts as elements and in compounds

Question 10

What are group 8 elements called and what are their prosperities

Answer 10

They’re called noble gases
- unreactive
- monoatomic gases