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Law Of Conservation Of Mass And Changes Of State Review
Test Description: Use this game to review for the conservation and state change portion of the test.
Instructions: Answer all questions to get your test result.
1) Which of these is a chemical change?
A
breaking a toothpick in half
B
boiling water
C
melting ice
D
burning leaves
2) Which one of the following is evidence that a physical change has occurred?
A
Change in color
B
Formation of gas
C
Production of heat
D
Change in the state of matter
3) In a chemical reaction, the total mass of the reactants is
A
Greater than the total mass of products
B
Unrelated to the total mass of products
C
Exactly equal to the total mass of products
D
Less than the total mass of products
4) In a chemical equation, which side of the yeilds arrow would you find the reactants?
A
right side
B
there are no reactants in a chemical equation
C
middle
D
left side
5) Which of the below answers is a property of a liquid?
A
atoms move independently
B
atoms slide past on another
C
atoms vibrate in place
D
atoms are super heated and create stars
6) Moving from a solid to a liquid ________________________.
A
adds energy and is called melting
B
removes energy and is called freezing
C
adds energy and is called freezing
D
removes energy and is called melting
7) The process of changing states from a liquid to a gas is called
A
evaporation
B
freezing
C
melting
D
condensation
8) A chemical change is different than a physical change because in a chemical change __________.
A
Chemicals are used.
B
A new substance is formed and in a physical change no new substance is formed.
C
Molecules do not physically touch.
D
The change can be seen but in a physical change it cannot.
9) If there are 4 oxygen atoms on the reactant side of a chemical equation, then how many oxygen atoms will be on the products side after the chemical reaction has occurred?
A
2
B
8
C
4
D
None of the above.
10) The law of conservation of mass states
A
.Matter is destroyed during a chemical reaction.
B
Matter is created during a chemical reaction.
C
Matter is conserved during a chemical reaction.
D
Matter is turned into heat during a chemical reaction.
*select an answer for all questions
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