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Worksheets9th Grade Unit 4
Total questions: 26
Worksheet time: 13mins
Name
Class
Date
1.
What is the Law of Conservation of Matter?
a)
Matter is all around us
b)
Matter is a substance that can transform into new things making more matter and destroying everything around us
c)
Matter cannot be destroyed or created
d)
Matter can be created and destroyed
2.
Which is an example of a balanced chemical equation?
a)
Cl+C=Cl2C5
b)
N2 + H2 = NH4
c)
Na+C3+H6+O9+Z21= Na+3CH2O3Z7
3.
How is the Law of Conservation of Matter demostrated in this equation?
CH4 + 4CL2 = CCl4 + 4HCl
CH4 + 4CL2 = CCl4 + 4HCl
a)
At the end everything is not equal
b)
At the begining everything is equal
c)
In the end everything is not equal
d)
In the end everything is equal
4.
What is an Exothermic Reaction?
a)
A reaction accompanied by an absorbation of heat
b)
did we learn this?
c)
A reaction accompanied by a release of heat
d)
A reaction involving the release and absorbation of heat
5.
Did you know that oxygen went for a second date with potassium?
How did it go?
How did it go?
a)
It went OK
b)
They lived happily ever after
c)
It went OK2
d)
Things didn't go so well
6.
What is Synthesis?
a)
wHAT
b)
A compund breaking down
c)
2/More elements combining to form a more complex product
d)
1 element making 1 element
7.
What does the Subscript represent?
a)
How much a thing is multiplied by
b)
The number of atoms in a molecule
c)
Number written below the line
d)
It's a number
8.
What is the definition of a Chemical Equation?
a)
Symbolic representation of how much I care
b)
Symbolic representation of a chemical reaction
c)
Symbolic representation of a chemical property
d)
Symbolic representation chemical
9.
What is a Chemical Reaction?
a)
Change in the physical property of an element
b)
When a substance gets new lipstick
c)
When a chemical laughs
d)
Change in the makeup of a substance
10.
What is Decomposition?
a)
When an organism dies and is broken down
b)
A compound broken into smaller elements
c)
A compound is made into another compound
d)
do i have to know this????????
11.
What is the subscript in this equation?
2H2O
2H2O
a)
2
b)
H
c)
(insert thing)2
d)
O
12.
What is the Coefficient in this equation?
3H2 + Na12Cl3 = 3H2Na4Cl
3H2 + Na12Cl3 = 3H2Na4Cl
a)
Cl
b)
3
c)
(insert thing)3
d)
=
13.
What is an Endothermic Reaction?
a)
A reaction occured by the release of cool energy
b)
A reaction in accompanied by the absorbtion of heat
c)
A reaction occured by dough
d)
A reaction accompanied by the release of heat
14.
Which side has the Reactants?
a)
Left
b)
Right
c)
Arrow
d)
Up
15.
Anyone know any jokes about sodium?
a)
No
b)
Yeah
c)
Na
d)
Maybe
16.
Which is an example of Synthesis?
a)
I didn't sign up for this
b)
AB => A + B
c)
A + B => AB
d)
A + B = ABCD
17.
What is this an example of?
a)
An example
b)
Endothermic reaction
c)
Endoexothermic reaction
d)
Exothermic Reaction
18.
What is Single Replacement?
a)
A chemical reaction I don't know about
b)
A chemical reaction where an element reacts with a compound and makes another compound
c)
A chemical reaction where it takes place of another element
d)
A chemical reaction where an element reacts with a compound and takes place of another compound
19.
Two chemists go into a restaurant.
The first one says "I think I'll have an H2O."
The first one says "I think I'll have an H2O."
a)
The second one says I'm OK
b)
The other said I'll have some too
c)
The second one says "I think I'll have an H2O too" -- and he died.
d)
The second one says "I think I'll have an H2O too" -- and he walked out just fine
20.
What is this an example of?
a)
Reactants
b)
Exothermic reaction
c)
Endothermic reaction
d)
Products
21.
What is Double Replacement?
a)
Where the stunt double gets replaced
b)
Type of chemical reaction where two compounds react, the positive ions and negative ions of the reactants switch place forming 2 new compounds
c)
Type of physical reaction where two compounds react, the positive ions and negative ions of the reactants switch place forming 2 new compounds
d)
Type of chemical reaction where two compounds react, the positive ions and negative ions of the reactants switch place forming 2 new elements
22.
Which is an example of Decomposition?
a)
A + B => AB
b)
AB => B + A
c)
I wasn't paying attention to the question before
d)
ABE => A + B + 3
23.
Which side has the product?
a)
Left
b)
Arrow
c)
Down
d)
Right
24.
What is this an example of?
a)
Replacement of elements
b)
Double replacement
c)
A B C
d)
Single replacement
25.
What is this an example of?
a)
ABCD
b)
Double replacement
c)
Single replacement
d)
The charge between Ions
26.
If you're not part of the solution
a)
what
b)
you're part of the precipitate
c)
you're a mixture
d)
um
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