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WorksheetsChapter 5 SandT
Total questions: 10
Worksheet time: 5mins
Name
Class
Date
1.
A chemical equation-a way to show a chemical reaction, using______ instead of ______.
a)
symbols and words
b)
pounds and ounces
c)
symbols and letters
d)
numbers and abbreviations
2.
The arrow between the products and reactants is read as _______ or _____ _____ _____.
a)
products or like and as
b)
symbols or letters to numbers
c)
yields or reacts to forms
d)
numbers or right to left
3.
Atoms are not created nor destroyed they are simply rearranged to from new ______.
a)
reactions
b)
words
c)
Oscars
d)
substances
4.
Law of Conservation of Mass = in a chemical reaction, ______ is not created or destroyed.
a)
mass
b)
weight
c)
matter
d)
length
5.
In an open system, - matter can _____ from or ______ to the surroundings
a)
leave from or stay
b)
enter from or escape
c)
come from or bring with
d)
die from or blend in
6.
According to the conservation of mass, the total mass stays the same before and after the reaction.
a)
false
b)
true
7.
Double replacement is where elements in a compound appear to trade places with elements in another group
a)
false
b)
true
8.
Decomposition- occurs when compounds ______ ______ into a simpler product.
a)
come together
b)
break through
c)
stick together
d)
break apart
9.
Fomulas for products are written to the ______ of the arrow
a)
right
b)
left
c)
middle
d)
side
10.
Formulas for reactants are written to the ______ of the arrow.
a)
middle
b)
N/A this is not a question!
c)
side
d)
left
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