Question

Check my answers please.

1. A copper block (20C) is placed in contact with a lead block (30C), which is already in contact with an iron block (70C). Which of the following will happen?

a) Heat will flow from the copper to the lead and from the iron to the lead until the temperatures are equal.
b) Heat will flow from the iron to the lead and from the lead to the copper until the temperatures are equal.
c) Heat will flow from the copper to the lead to the iron until the temperatures are equal.
d) Heat will flow from the lead to the copper and to the iron until the temperatures are equal.

I think the answer is B.

Answer 1

2. Assuming the substances have the same mass and are heated by the same amount, which of the following substances would heat up the most slowly? Use the table to identify the substance.

a) iron
b) copper
c) aluminum
d) gold

Answer 2

Tag peopel, that would be helfpu

Answer 3

How do I tag people?

Answer 4

@ like this and put thei name for instance

@serenity2001 ;)

Answer 5

Who should I tag?

Answer 6

Anybody whom you see on the user list ;)

Answer 7

I think the answer for #2 is c.

Answer 8

3. In the coffee-cup calorimeter used in a laboratory, which of the following statements are true?

a) The water is part of the system.
b) The foam cups are the only part of the system.
c) The water is the system and the ice is the variable.
d) The foam cups are not part of the system.

I think it's a but I'm not too sure.