Is this EXTENSIVE OR INTENSIVE?

Question

1. number of calories in 10 grams of sugar.
2. Percentage of alcohol in a beer.
3. Electrical resistance of 1km length of 22 gauge copper wire
4. Electrical resistance of 22 gauge copper wire.

Answer 1

1. number of calories in 10 grams of sugar. Intensive, same for any 10 gram sample
2. Percentage of alcohol in a beer. Intensive
3. Electrical resistance of 1km length of 22 gauge copper wire > same as 1.
4. Electrical resistance of 22 gauge copper wire. extensice, depends on length.