thermal contact
When heat flows from one object or substance to another it is in contact with, the objects or substances are said to be in thermal contact. The state where objects in thermal contact with each other reach the same temperature, no heat flows between them.
Answer:
The answer is B.
Explanation:
Trust me i took the test already its b.
1. Magnets attract objects of iron, cobalt and nickel
2. Force of attraction of a magnet is greater at is poles than in the middle
The answer is sulfate pentahydrate
Hope this helps you :D