CHEM 211 ACS Exam Final Questions and Correct Answers/ Latest Update / Already Graded

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CHEM 211 ACS Exam Final Questions and
Correct Answers/ Latest Update / Already
Graded
physical properties

Ans: the characteristics of a substance that can be observed or
measured without changing the substance
- color
- melting point
-electrical conducivity
- density


physical change

Ans: A change in a substance that does not involve a change in
the identity or composition of the substance


Chemical properties

Ans: A characteristic of a substance that appears as it interacts
with, or transforms into, other substances.
- flammability
- corrisiveness
- reactivity with acids


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chemical change/reaction

Ans: A change in which one or more substances are converted
into one or more substances with different composition and
properties.


Energy

Ans: the ability to do work, to move matter.


Potential energy

Ans: the energy an object has as a result of its position relative
to other objects or because of its composition.


Kinetic energy

Ans: the energy an object has in motion.


what are the two concepts central to energy?

Ans: 1. when energy is converted from one form to another, it
is conserved, not destroyed.




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