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Vocabulary Quiz 3 - Unit Intro to Matter

Total questions: 26

Worksheet time: 20mins

Name
Class
Date
1.

What are the products of the chemical reaction pictured?

a)

CH4 and CO2

b)

CH4 and O2

c)

CO2 and H2O

d)

O2 and H2O

2.

If reactants' mass is 18g , what is the mass of the reactants ?

a)

15

b)

36

c)

81

d)

18

3.

Which compounds are the PRODUCTS of this reaction?

a)

CO2 + H2O

b)

C6H12O6 + O2

c)

C6H12O6 + CO2

d)

H2O + O2

4.
This is used to represent the number of each atom being represented. 
a)
A Exponent
b)
The Coefficient
c)
A Molecule
d)
The Subscript
5.
This appears on the left side of a chemical formula, and represents how many molecules there are. 
a)
An Atom
b)
The Subscript
c)
A Molecule
d)
The Coefficient
6.
If there are 4 H atoms on the reactant side, how many H atoms will be on the product side? 
a)
2
b)
4
c)
6
d)
You need more information to answer this question
7.

Matter can not be created nor destroyed: it can only be

a)

Destroyed a little bit

b)

Invisible

c)

Rearranged, changed

d)

None of the above

8.

How many atoms of Iron are in this compound?

a)

1

b)

2

c)

3

d)

4

9.

A shorter, easier way to show chemical reactions, using symbols instead of words, is called a

a)

chemical equation.

b)

chemical formula.

c)

symbol.

d)

subscript.

10.

A burning match is an example of a(n) ____________________, where matter can enter from or escape to the surroundings.

a)

open system

b)

closed system

11.

How many atoms of hydrogen are there in the following chemical formula: 2H20

a)

0

b)

2

c)

4

d)

6

12.

In an _______________ system, matter is not able to enter or leave.

a)

Open

b)

Endothermic

c)

Exothermic

d)

Closed

13.
One compound breaks down and forms two or more substances
a)
Synthesis
b)
Decomposition
c)
Replacement
d)
Combustion
14.
A + B = AB
a)
Double Replacement
b)
Synthesis
c)
Combustion
d)
Decomposition
15.
Which of the following is the general formula for a decomposition reaction?
a)
A + B  → AB
b)
AB → A + B
c)
AB + C → AC + B
d)
AB + CD → AC + BD
16.
CaCO3 represents a chemical
a)
Symbol
b)
Formula
c)
Subscript
d)
Reaction
17.
Which of the following models best demonstrates a balanced chemical equation?
a)
F
b)
G
c)
H
d)
J
18.
KOH + H3PO4 → K3PO4 + H2O
a)
Synthesis (combination)
b)
Decomposition
c)
Single replacement
d)
Double replacement
19.
Mg + N2 →Mg3N2
a)
Synthesis (combination)
b)
Decomposition
c)
Single replacement
d)
Combustion
20.

A solid that is deposited from a solution

a)

Solid

b)

Liquid

c)

Product

d)

Precipitate

21.
Increasing the surface area of the reactants will increase the rate of the reaction.
a)
True
b)
False
22.

A catalyst increases the rate of a reaction.

a)
True
b)
False
23.
Increasing the temperature of a reaction will __________ the rate of the reaction.
a)
increase
b)
decrease
24.
A substance used to decrease the rate of a chemical reaction is called an 
a)
enzyme
b)
inhibitor
25.
What indicates a chemical reaction occurred?
a)
Heat or Light is released
heat or light is produced
b)
gas (bubbles) produced
c)
color change
d)
all of the above
26.
In an endothermic reaction, heat is ...
a)
taken in or absorbed
b)
given out or released 

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