SC13a Transition Metals

Question 1

13.1 we call that most metals of transition metals and that their typical properties include
A high melting point
B high density
C information of coloured compounds
D catalytic activity of the metals and the compounds as exemplified by iron

Question 2

what type of metals are most metals?

Answer 2

transition metals

Question 3

what two groups are metals but aren’t transition metals?

Answer 3

group 1 and 2

Question 4

What are the four properties of transition metals?

Answer 4

~high melting point
~high density
~coloured compound
~catalysts

Question 5

What is a catalyst?

Answer 5

Speeds of reaction about being used up

Question 6

what catalyst is used for the manufacture of ammonia in the haber process?

Answer 6

iron

Question 7

Potassium is a group one metal and titanium is a transition metal
predict 1 difference in the physical properties and one difference in their chemical properties (2 marks)

Answer 7

Physical property titanium has a higher melting point and higher density
Chemical property
titanium is less reactive and forms coloured compounds but potassium forms white or colourless compounds and acts as a catalyst but potassium does not

Question 8

Corrosion practical
part 1 - barriers for us prevention

Answer 8

1. paint one of the eye nails with nail vanish and allow it to dry
2. go another iron nail petroleum jelly
3. stretch cling film over a further iron nail, taking care not to break the plastic
4. Put the free treated nails and one untreated nail into separate test tubes
5. Pour rusting indicator into each test tube to completely cover each nail. Leave until next lesson

Question 9

Corrosion practical
part 2 - sacrificial rust protection

Answer 9

1. wrap a bit a piece of magnesium ribbon around the middle of an iron nail, and put it into a test tube
2. wrap another nail with a bit of copper foil around the middle of an iron nail and put it into a test tube
3. who are rusting indicator into each test tube to completely cover each nail

Question 10

corrosion practical
part 3 - causes of rusting

Answer 10

1. Put an iron nail into a test tube and half cover it with boiled water. This nail is exposed to air and water
2. put an iron nail into a test tube, cover it with boiled water, and add a layer of vegetable oil. This thing is exposed to water but not air
3. Put an iron nail into a test tube and half cover it with calcium chloride. this nail is exposed to air but not water
4. Leave the nails for a couple of days and then record their appearance