Which of the following is not an example of a physical change? a
Chopping Down a Tree in a Forest
b
Tearing a Sheet of Paper in Half
c
Ice Melting
d
A Nail Rusting

Which of the following is not one of the 5 ways you know that a chemical reaction occurred?

a
New Odor
b
Gas Production
c
Light Emission
d
Temperature Change

Pay close attention, this question is worth 15 points. Make sure to answer all parts in your own words:

a. Explain the Law of Conservation of Mass.

b. Explain how this is demonstrated in a chemical reaction.

c. How did we witness this in class?

In physics, is the change in position with respect to .

All moving objects have kinetic energy
* = more kinetic energy

Fill in the Blank:
Endothermic - absorb heat when the reaction is taking place (will feel ).
Exothermic - these types of reactions release heat (will feel ).

m/s2 is the value of gravity on Earth.
(What value do we give gravity on Earth?)

Balanced forces will have a net force of .