1. First, move the decimal place until you have a number between 1 and 10. If you keep moving the decimal point to the right in 0.0000073 you will get 7.3.
2. Next, count how many places you moved the decimal point.
Matter is anything that has mass and takes up space.
Hope this helps!! (:
Change in concentration/change in time.(C).
I haven’t learned about this but here’s my best guess
a. sublimation
b. freezing
c. melting
d. condensation
e. boiling
hope this helps:)