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________ .