Mercury expands when it is heated. This process is called thermal expansion.
Reaction [taking place]
Hope that helps
Answer:
Yes
Explanation:
Is this a question or what?
Answer:
b) sharpening a pencil
Explanation:
If you melt lead, boil water, or dissolve sugar in water, you can return all of them back to their original state. If you sharpen a pencil, you can't reattach the shavings as they were originally.
