is a piece of chalk being crushed a chemical reaction?

Question

what about a plant growing taller? is it a physical reation?

Answer 1

chalk- physical
plant- chemical

Answer 2

Chalk no because it is just being broken down into a smaller state but a plant is growing taller because it is breaking sown chemicals so it is a chemical reaction

Answer 3

No, it's a physical reformation.

But if you use chalk on a wet chalk board it is a chemical reaction and it will really p--- of your teacher.

A plant is not a chemical reaction, photosynthesis is.
All matter can chemically react, a piece of chalk is not an eternal physical form.

Answer 4

No, it's a physical reaction. Because there is no other substance reacting with the chalk it is just your had (i am assuming) crushing it. It acid melted the chalk it would be chemical but this is just physical.

Answer 5

i don't think the chalk is. I think that chemical reactions cause a physical reaction(for the plant growing) if that makes any sense..

Answer 6

One will just talk back and forth. For every action there is a reaction for every reaction there mus have been first the action. So to return to the point of origin then a reversal must occur. This would take a chemical that would cause the reversal. In theory I answer thus

Answer 7

chalk crushed is physical, bec physical change only--you still have chalk (just smaller)

plant growing - chemical change - you create new compounds when you grow.

Answer 8

don;t think so
just changing form from solid to powder