Answer:
The snow absorbed radiant energy to produce a physical change.
Explanation:
Hi!
You would not want to use a stopper when<span> combining two unknown substances because the gasses made from the combination could end up creating to much pressure and explode.</span>
Answer:
the rate increases
Explanation:
they are closer to each other, they will collide with each other more frequently and more successful collision
Answer:
No, it's a physical reaction.
Explanation:
A chemical change produces new chemical compounds, but combining water and powder is just mixing the powder with the water. It's not a new compound.
I don't know how to really explain, sorry :)
It is the crust, the least dense layer.
