When a substance changes from a solid to a gas without becoming a liquid it has....?

Question

a.) melted
b.) sublimed
c.) evaporated
d.) vaporized

~*AND*~

All changes in phase are..

a.) chemical changes
b.) chemical reactions
c.) physical changes
d.) chemical properties

Answer 1

The correct answer for the first question is B. Sublimed.

The correct answer to the 2nd question is "physical change"...the reason for that is that there has been no change in the identity of the substance...all that has changed is its physical form. Said another way....you can take ice and melt it to get liquid water, but it is STILL water. You haven't changed its identity as a substance. You can take liquid water and boil it to get steam, but it is still water. Thus, changes in phase (meaning solid, liquid, or gas) are only physical changes.

Answer 2

B. Sublimed

Melted is definitely liquid. Evaporized is liquid to gas. Vaporized is to vapor. Sublimed is solid to gas.

Answer 3

i think an entire sentence easiest demands a self-discipline and verb. the 1st, "Softly falls the night time", is an entire sentence, because of the reality it has a self-discipline (night time) and verb (falls) this is in basic terms worded in a different way. I wager lets say "The night time falls softly" "Canada's optimal mountain, Mount Logan" does not have a verb, so this is a fraction. "think of in the previous than signing" is a command, so this is an entire sentence. i'm ideal particular it quite is genuine... desire that's helping! :)

Answer 4

its called sublimation. it has sublimed. dry ice does not melt because it never becomes a liquid at normal temps and pressures it just becomes a gas and wafts away....it sublimes. Naphtha balls called moth balls also sublimes at normal temperature and pressures.

Answer 5

"sublimed" is definitely the correct answer.

Answer 6

b) sublimed
c) physical