Which two observations below can be evidence that a chemical change has occurred
a. production of bubbles (a gas)
b. melting
c. vaporization
d. production of heat

When you mate two plants together the terms is called? answer it fast as possible plz! i have a test tomorrow!

How is the use of hydroelectric power related to the sun

How does water evaporating from a glass show that matter is made up of particles? a. the heat energy from the air causes the glass to fill up with water particles. b. the liquid water particles turn into water vapor that spreads in the air. c. the particles of the glass dissolve in water and cause it to evaporate. d. the tiny particles of the glass evaporate and seem to disappear.