Question

Check my answers?

Which of the following best describes the motion of the particles in a piece of steel?
None are moving
A few are moving
X All are moving (my choice)
Most are moving

Most solids_____
X are dense and difficult to compress (my answer)
are able to flow
are amorphous
have a disorderly structure

Cyrstals are classified into how many different crystal systems?
4
5
6
X 7 (my answer)

Thanks!

Answer 1

the first two are definitely right, but I don't know about the number of crystal types off the top of my head

Answer 2

1. C- all are moving
2. A- dense and difficult to compress
3. D- 7
Just took it, 100%