PLZ ANSWER ASAP 20 POINTS!!!
plz pick the answer for each question and say why u think it is the answer
1. which process releases energy?
a. a gas condensing to liquid
b. a solid changing into liquid (it's not b or d kuz I got that and it was wrong)
c. an evaporating liquid
d. a gas being heated
2. Molecules of h2o move most frequently in
a. a solid phase
b. the liquid phase (i got b so its wrong)
c. the gas phase
d. the cold phase
3. in which phase are particles (i.e. atoms) generally the closest?
a. solid
b. liquid
c. gas
d. plasma
4. when a block of ice is at zero degrees celsius, the ice absorbs energy from its environment. as the ice is melting, the temperature of the ice block
a. decreases
b. increases
c. increases then decrease then increases
d. remains the same
5. the law of the conversation of mass states that
a. matter can change phase easily
b. matter cannot be created or destroyed
c. matter can disappear and reappear
d. matter can melt and freeze
6.which is an example of chemical change?
a. a rusting nail
b. water boiling
c. quick change
d. rare change
7. what happens to the viscosity of a liquid when its temperature increases?
a. the viscosity of the liquid increases
b. the viscosity of the liquid stays the same, surface tension increases
c. the viscosity of the liquid decreases
d. the viscosity of the liquid increases then decreases
8. what is the relationship between a liquids viscosity and that liquids surface tension?
a. as the viscosity increases, surface tension increases
b. as the viscosity decreases, surface tension increases
c. as viscosity says the same, surface tension increases
d. as viscosity stays the same, surface tension decreases
9. using the law of conversion of mass, we can know that
a. the product will have more mass
b. the reluctant will have more mass
c. the reluctant will have more mass and the product will have less mass
d. the reluctants and the products will have the same mass
