Where are the transition metals found in the periodic table?
On the left of the periodic table, in groups 1 and 2
In the middle of the periodic table, between groups 2 and 3
On the right of the periodic table, in groups 7 and 8
Which of the following is a transition metal?
Zinc
Sodium
Aluminium
Which of these is a typical property of all transition metals?
Malleable
Brittle
Low melting point
What two things must be present for iron to rust?
Oxygen and heat
Water and oxygen
Water and salt
How does electroplating iron objects prevent them from rusting?
Electroplating galvanises the iron and stops it rusting
The metal coating stops the iron rusting by sacrificial protection
The expensive metal coating keeps out air and water
Which metal could be used for sacrificial protection of iron?
Tin
Lead
Magnesium
Which of the following is an alloy?
Copper
Steel
Which of these properties of aluminium is most important for explaining its use in overhead electrical cables?
Low density
High thermal conductivity
Why is gold used to plate the plugs used to connect hi-fi speaker cables to a stereo amplifier?
High melting point
Good conductor of electricity
High density
Why are alloys typically stiffer than pure metals?
The metallic bonding is stronger in alloys
The metal atoms are all very regularly arranged in an alloy
The layers of metal atoms in the alloy cannot slide over each other very easily