Chemistry Review SLO Question Preview (ID: 42636)
Utah SLO Review.
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A good experiment contains the following:
a) One independent variable you change and no control test.
b) As many independent variables as possible will help make it a good experiment.
c) Two or three independent variables you change and a control test.
d) One independent variable you change and a control test you compare it to.
What property of gold makes it useful in jewelry making?
a) It’s very dense
b) It's magnetic
c) It rusts
d) It’s malleable and can be molded to different shapes
What is a property of water that makes it useful for putting out fires?
a) It is clear
b) It is not flammable
c) It absorbs a lot of heat
d) It boils at 100 degrees celsius
Which of these is the best definition for natural?
a) Changed physically by man but not chemically.
b) Changed chemically by man but not physically
c)
d)
Which of these is the best definition of Synthetic?
a) Changed physically by man but not chemically.
b) Changed chemically by man but not physically.
c)
d)
T/F Synthetic things come from Natural things.
a) True
b) False
c)
d)
Which of the following best describes what a chemical reaction is?
a) Atoms rearrange to make new molecules
b) Atoms gain or lose protons to make new substances
c) Molecules stay the same but their properties change
d) Molecules reproduce to make new substances
How do you know when a chemical reaction has occurred?
a) a new substance has formed; it would be hard to reverse
b) a phase change has occurred; it would be easy to reverse
c) the substance changes size, shape, texture and mass
d) the mass of the reactants is changed into energy that is given off
(T/F) In a chemical reaction, bonds between atoms are broken, and atoms rearrange and form new bonds.
a) True
b) False
c)
d)
At a family barbeque your Uncle Billy Bob Jr. puts a steak on the grill. Which of the following uses evidence to describe what is happening to the meat?
a) It is a chemical reaction because you are mixing the BBQ sauce and the meat.
b) It is not a chemical reaction because there is a new smell and taste.
c) It is not a chemical reaction because only the color changes.
d) It is a chemical reaction because there is a new smell, taste, and color.
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