Homework week 1 26/2/24 Year 9

• Science
• Lower Secondary (Key Stage 3)

Homework week 1 26/2/24 Year 9

.

Transition metals compared to group 1 are

1. Softer, less dense and more reactive
2. Harder, less dense and more reactive
3. Harder, denser and less reactive
4. Softer, more dense and less reactive.

Transition metals typically form

1. colourless compounds
2. coloured compounds

Group 7 are called

1. Transition metals
2. Alkali metals
3. Nobel gases
4. Halogens

As you go down group 7

1. Melting point increases.
2. Melting point decreases
3. Reactivity increases
4. State changes from solid to gas

Group 7 form which ions

1. +1 ions
2. +2 ions
3. -1 ions
4. -2 ions

Group 1 metals

1. Increase in reactivity as you ascend the group
2. Decrease in reactivity as you ascend the group
3. Increase in reactivity as you descend the group
4. Decrease in reactivity as you descend the group

Describe the word displacement.

Describe the development of the periodic table including the work of Mendeleev.

Describe the structure of the periodic table in terms of groups, periods, metals and non metals.