Font size
WorksheetsMatter and Dimensional Analysis Test Review (On level Home Version)
Total questions: 92
Worksheet time: 2hrs 26mins
The SI base unit used to measure the mass of an object is
kelvin
Gram
Meter
Liter
How many moles are represented by 1.5 × 1024 molecules of lead(IV) nitrate, Pb(NO3)4?
1.49 moles
2.49 moles
0.249 moles
2.49 x 1046 moles
Calculate the number of molecules in 4.0 moles of H2O.
0.60 x 1023 molecules
2.4 x 1023 molecules
2.4 x 1024 molecules
2.4 x 10-23 molecules
The prefix, deci- means
10-2
101
103
10-1
The number, 745.0 has _______ significant digits / figures.
5
3
4
none of the listed options
Find the density of a rubber ball that has a volume of 6 cm3 and a mass of 36 g. (Density = mass/volume)
216 gcm3
6 g/cm3
0.16666 cm3/g
6
Convert the following number to scientific notation: 0.00025
25.0 x 10-4
2.5 x 103
2.5 x 10-4
2.5 x 10-3
How many molecules are in 5.78 moles of glucose, C6H12O6 ?
3.48 x 1024
6.02 x 1023
0.032
If Meg a Mole makes a density measurement close to the known measurement, she is
accurate
precise
both accurate and precise
neither accurate nor precise
How many atoms are in 5.0 mol Au?
3.0 x 1024 atoms
8.3 x 10-24 atoms
0.025 atoms
980 atoms
Which is has the smallest volume?
ML
daL
dL
mL
How many nanograms are in 10 kilograms?
10,000
1 x 10-8
1 x 10-11
1 x 1013
How many significant figures does the following number have: 0.0004530
3
4
6
7
Freddy weighs 100 kilograms. How much does he weigh in pounds? (1 lb =453.6 g)
45.4 lbs
45,400 lbs
0.220 lbs
220 lbs
A mixture
can not be separated by physical separation techniques.
is always homogenous
is always heterogenous
is a physical blend substances
Which of the following is an extensive property
color
sublimation point
density
volume
Which of the following is not a homogeneous mixture?
sand water
salt water
air
alloy
Which of the following is exothermic?
melting
sublimation
condensation
evaporation
What is an effective way of separating a mixture of liquids?
filtration
evaporation
paper chromatography
distillation
What are not signs of a chemical change?
change in color
formation of a gas or precipitation
a transfer of energy
a change in phase
You need multiple measurements for precision.
true
false
You need multiple measurements for accuracy.
True
False
Calculate with correct sig figs: ( 800. x 2.413) + 3.45
1930.4
1933.45
1933
1930
The following are examples of Qualitative data except
rough surface
black color
10 m long
friendly personality
_________ are developed when theories go unchanged for hundreds of years
hypothesis
theories
observations
laws
A theory is a hypothesis that has not yet been tested.
True
False
If you do not understand the directions or part of a procedure, ask ______ before proceeding.
your friend
your teacher
your phone
no one
Which variable is observed in an experiment and is plotted on the y-axis of the graph?
dependent variable
independent variable
manipulated variable
control variable
Which measure -tool combination is incorrect ?
Mass - balance
Volume - Buret
Time - stopwatch
Mass - Graduated cylinder
The experimental variable that is changed or manipulated.
Control
Constant
Dependent Variable
Independent Variable
Changes in the _________ variable causes changes in the _________ variable.
independent; dependent
dependent; independent
0.9/2.3
0.391
0.39
0.40
0.4
9,000 milliliters or 10 liters
Convert 3.5 gallons into cups. (1gal = 16cups)
56 cups
0.21875 cups
19.5 cups
48 cups
How many years are in a 3 months?
0.2 yrs
0.75 yrs
0.50 yrs
0.25 yrs
How many kilograms of calcium are there in 173 pounds of calcium? (1 pound = 454 grams)
1.10 kg
78.5 kg
110 kg
78500 kg
(Hint: 5280 ft = 1 mi)
(there are 2.54 cm in an inch)
98 dL = ________mL
98
0.98
980
9800
If you are converting 4 pounds to ounces, which of the following conversion factors would you use?
1 kg = 2.2 lbs
1 lb = 16 oz.
1 gram = 0.038 oz.
1 oz. = 30 mL
How many kilograms of calcium are there in 173 pounds of calcium? (1 pound = 454 grams)
1.10 kg
78.5 kg
110 kg
78500 kg
Which mixture separation method would use to separate salt from water?
filtration
magnet
boiling/evaporation
sorting physically
What method should you use to separate iron shavings and sand?
filtration
sorting
magnet
boiling
Elements and compounds are always ___.
pure substances
mixtures
Matter is destroyed during...
Only a Physical Change
Only a Chemical Change
Both Physical & Chemical Changes
Neither Physical & Chemical Changes
Italian Salad Dressing is considered to be which kind of mixture?
suspension
colloid
compound
element
I. solid
II. liquid
III. gas
Which proposal would make separating the three parts of the mixture the fastest?
Dyes in water soluble markers may be separated by means of..
crystallization
sublimation
chromatography
sedimentation
Convert 4.5x1024 atoms to moles
0.747 particles
0.747 mol
2.71x1047 mol
2.71x1047 particles
Convert 5.11x1023 atoms of lithium to moles?
1.18
0.351
1.34
0.849
(0901) How many water molecules are in 5.2 moles of water?
6.0 x 1023 molecules
5.2 molecules
3.1 x 1024 molecules
8.6 x 10-24 molecules
(0901) How many moles of methane (CH4) are in 1.24 x 1023 molecules of methane?
6.02 x 1023 moles
7.46 x 1046 moles
978 moles
0.206 moles
