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WorksheetsChemistry Unit 1 Test Review
Total questions: 39
Worksheet time: 1hrs 18mins
Which state of matter has particles that are very tightly packed together?
Solid
Liquid
Gas
Plasma
Which state of matter takes the shape of its container and has a fixed volume?
Solid
Liquid
Gas
Plasma
Which of the following represents a homogeneous mixture?
oil floating on water
water
breakfast cereal in milk
NaOH solution
Physical means can be used to separate
elements
pure substances
mixtures
compounds
Chemistry is best defined as
the study of the Earth
the study of matter and its changes
the study of forces and motion
the study of life processes
Anything that has mass and takes up space is best described as being
molecular
dense
cellular
matter
The standard system of measurement accepted by scientists worldwide
Metric System
English System
SI System
all of these
Express 789000000 in scientific notation
7.89 X 10-8
7.89 X 108
78.9 X 10-7
789 x 106
A series of measurements is precise if
it includes the correct units
contains at least three significant figures
is close to the true value
each measurement is close to the others
How many significant figures are there in 0.0004
1
2
3
4
How many millimeters are in 678 centimeters?
6.78
67.80
6,780
67,800
How many significant figures are in 5.31?
two
three
four
five
Accuracy is judged by
how close a value is to the true value
the precision of the tool used for measurement
the reputation of the scientist
none of these
How many significant figures are in 90,100
two
three
four
five
Which of the following shows 0.00000034 g?
3.4 x 107 g
3.4 x 106 g
3.4 x 10–6 g
3.4 x 10–7 g
Maria is 168 centimeters tall. Her height in hectometers is
16.8
1.68
0.168
0.0168
Convert 273 Kelvin to Celsius.
0⁰C
546⁰C
-273⁰C
32⁰C
What is the correct number of significant figures when you add 3.1 x 102 and 4.56 x 102?
1
2
3
4
You are asked to find the volume of a cube that is 3 cm high, 5.62 cm wide, and 6.543 cm long. How many significant figures should you show in your answer?
one
two
three
four
Which would be an appropriate unit for density?
kilogram
grams per milliliter
liter
meter
What is the temperature scale where water freezes at zero?
Celsius
Kelvin
Fahrenheit
What is the temperature scale that includes absolute zero?
Celsius
Kelvin
Fahrenheit
What is the the quantity of matter in an object.
mass
volume
element
compound
What is the the amount of space an object occupies?
mass
volume
compound
element
What is the system for writing large or small numbers?
metric system
SI system
scientific notation
What is a mixture that is the same throughout?
homogeneous
heterogeneous
oil and vinegar
trail mix
What is a substance consisting of atoms that are all the same called?
atom
compound
element
heterogeneous
What is the smallest unit of an element called?
atom
element
compound
homogeneous
Something that is made up of two or more atoms that are chemically combined is called a(n)
atom
compound
element
A mixture that is not evenly mixed is called
homogeneous
heterogeneous
soda
milk
What is the formula for density?
volume divided by mass
mass times volume
mass divided by volume
volume divided by time
What is the correct SI unit for mass?
cm3
mL
kg
K
What are the correct SI units for volume?
cm3
mL
K
s
What is the correct SI unit for length?
kg
mL
m
s
What is the correct SI unit for temperature?
Celsius
Fahrenheit
Kelvin
What is the correct SI unit for time?
s
ms
ks
cs
Identify all of the physical changes.
cooking an egg
bubbles forming in boiling water
tarnishing metal
dissolving salt in water
burning gasoline
Which method would you use to separate sugar that is dissolved in water into sugar and water?
filtration
decanting
distillation
magnetic separation
Which method would you use to remove the sediment (particles) that are floating in your tap water?
distillation
filtration
decanting
magnetic separation
