Law Of Conservation Of Mass And Changes Of State Review Question Preview (ID: 44970)
Use This Game To Review For The Conservation And State Change Portion Of The Test.
TEACHERS: click here for quick copy question ID numbers.
Which of these is a chemical change?
a) burning leaves
b) melting ice
c) breaking a toothpick in half
d) boiling water
Which one of the following is evidence that a physical change has occurred?
a) Formation of gas
b) Change in color
c) Change in the state of matter
d) Production of heat
In a chemical reaction, the total mass of the reactants is
a) Less than the total mass of products
b) Greater than the total mass of products
c) Exactly equal to the total mass of products
d) Unrelated to the total mass of products
In a chemical equation, which side of the yeilds arrow would you find the reactants?
a) middle
b) left side
c) right side
d) there are no reactants in a chemical equation
Which of the below answers is a property of a liquid?
a) atoms slide past on another
b) atoms vibrate in place
c) atoms move independently
d) atoms are super heated and create stars
Moving from a solid to a liquid ________________________.
a) removes energy and is called melting
b) adds energy and is called melting
c) removes energy and is called freezing
d) adds energy and is called freezing
The process of changing states from a liquid to a gas is called
a) melting
b) condensation
c) freezing
d) evaporation
A chemical change is different than a physical change because in a chemical change __________.
a) Chemicals are used.
b) Molecules do not physically touch.
c) A new substance is formed and in a physical change no new substance is formed.
d) The change can be seen but in a physical change it cannot.
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) 4
c) 8
d) None of the above.
The law of conservation of mass states
a) Matter is created during a chemical reaction.
b) .Matter is destroyed during a chemical reaction.
c) Matter is conserved during a chemical reaction.
d) Matter is turned into heat during a chemical reaction.
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