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WorksheetsIntro to Chemistry Review
Total questions: 30
Worksheet time: 3hrs 30mins
Name
Class
Date
1.
The flammability of a substance is
a)
A. a chemical property.
b)
B. related to the density
c)
C. a physical property.-
d)
D. changeable.
2.
What is a pure substance made of two or more elements that are chemically combined called?
a)
A. element
b)
B. compound
c)
C. mixture
d)
D. solution
3.
When materials combine to form a mixture, they
a)
A. keep their original properties.
b)
B. react to form a new substance with new properties.
c)
C. combine in a specific ratio.
d)
D. always change their physical state.
4.
If a spoonful of salt is mixed in a glass of water, what is the water called?
a)
A. solute
b)
B. solution
c)
C. solvent
d)
D. element
5.
How many elements are in C6H12O6?
a)
1
b)
2
c)
3
d)
4
6.
Element or compound?
H2O
H2O
a)
element
b)
compound
7.
Element or compound?
O2
O2
a)
Element
b)
Compound
8.
How many atoms of carbon (C) are in C6H12O6?
a)
3
b)
6
c)
12
d)
24
9.
Which of the following is a compound?
a)
Co
b)
O2
c)
C
d)
CO2
10.
Which is the correct formula for:
three hydrogen (H)
one sulfur (S)
four oxygen (O)
three hydrogen (H)
one sulfur (S)
four oxygen (O)
a)
H3SO4
b)
HSO4
c)
H4S3O
d)
H2O
11.
How many elements are in H2O?
a)
1
b)
2
c)
3
d)
4
12.
How many atoms are there TOTAL in:
H2SO4
H2SO4
a)
6
b)
5
c)
7
d)
3
13.
Which is an example of a physical property?
a)
rusting
b)
boiling point
c)
combustion
d)
reactivity with water
14.
This is an example of a
a)
physical change
b)
chemical change
15.
Ability to rust is this type of property:
a)
Physical property
b)
Chemical property
16.
Which is an example of a physical property?
a)
ability to react with acid
b)
color
c)
flammability
d)
ability to react with oxygen
17.
Particles (molecules) in a ______________________ have more energy than the other states of matter.
a)
gas
b)
solid
c)
liquid
18.
Which state of matter has tightly packed molecules?
a)
solid
b)
liquid
c)
gas
19.
Which state of matter has a definite shape?
a)
solid
b)
liquid
c)
gas
20.
What is happening when my ice cream changes from a solid to a liquid?
a)
freezing
b)
melting
c)
burning
d)
evaporation
21.
What term describes a solid changing to a gas?
a)
Deposition
b)
Sublimation
c)
Evaporation
d)
Freezing
22.
What is condensation?
a)
gas to solid
b)
gas to liquid
c)
liquid to solid
d)
solid to liquid
23.
The milk in the glass has volume and takes the shape of its container. Therefore, it is assumed that milk is a ______________.
a)
solid
b)
liquid
c)
gas
d)
plasma
24.
The molecules in the picture are tightly held together with little movement. They have shape and energy. Therefore, the picture represents _________.
a)
solid
b)
liquid
c)
gas
d)
plasma
25.
If the tops were removed from the cylinders, the following would happen:
a)
The solid would fly out of the container
b)
The liquid would fly out of the container.
c)
The gas would fly out of the container.
d)
They ALL would fly out of the container.
26.
What does this picture represent?
a)
solid
b)
liquid
c)
gas
d)
plasma
27.
When iron nails get rusty, heat is released. What process is this?
a)
Exothermic
b)
Endothermic
28.
If a chemical reaction is EXOTHERMIC, the temperature would....
a)
Stay the same
b)
Increase
c)
Decrease
29.
When Volume increases then Pressure must...
a)
Increase
b)
Decrease
30.
Charles' Law says if the temperature of any gas is increased its volume will -
a)
increase
b)
decrease
c)
remains the same
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