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WorksheetsUnit 1 Review
Total questions: 88
Worksheet time: 8hrs 12mins
Name
Class
Date
1.
A tomato chopped up to make salsa?
a)
Physical Change
b)
Chemical Change
2.
Burning a sheet of paper?
a)
Physical Change
b)
Chemical Change
3.
Rotting bananas?
a)
Physical Change
b)
Chemical Change
4.
Cutting your hair?
a)
Physical Change
b)
Chemical Change
5.
Leaves changing colors?
a)
Physical Change
b)
Chemical Change
6.
rubbing alcohol evaporates
a)
physical change
b)
chemical change
7.
water is heated and changed to steam
a)
physical change
b)
chemical change
8.
food digested in the stomach
a)
physical change
b)
chemical change
9.
water absorbed by a paper towel
a)
physical change
b)
chemical change
10.
water freezes at 0⁰C
a)
physical change
b)
chemical change
11.
sodium and potassium react violently with water
a)
physical change
b)
chemical change
12.
Gwen’s family built a wood fire in the fireplace. The next day, Gwen noticed that there was no wood left in the fireplace, only ashes. Which best explains this?
a)
Wood is separated from ashes as it burns.
b)
Wood becomes a new substance as it burns.
c)
Ashes have the same properties as wood.
d)
Ashes are the same substance as wood.
13.
This is made up of one or more of kind of the SAME kind of atom
a)
Element
b)
Mixture
c)
Compound
d)
Matter
14.
What is water?
a)
an element
b)
a compound
15.
DIFFERENT kinds of atoms chemically combined to form a substance are
a)
Mixture
b)
Element
c)
Compound
d)
Substance
16.
Copper is a mixture.
a)
True
b)
False
17.
Water is
a)
a pure substance
b)
a mixture
18.
Alex goes into the garden and digs up a shovel full of dirt. This is a _____________ mixture.
a)
Homogeneous
b)
Heterogenous
19.
An example of a homogeneous mixture would be:
a)
salad
b)
perfume
c)
pizza
d)
chex mix
20.
You are eating a pizza. What type of mixture are you consuming?
a)
homogeneous
b)
heterogeneous
c)
pure substance
d)
The Periodic Table
21.
Flammability is an example of what property?
a)
Chemical property
b)
Physical property
22.
This is an example of a ____________?
a)
physical change
b)
chemical change
23.
This is an example of ___________?
a)
physical property
b)
chemical property
24.
Iron rusting is an example of ___________?
a)
Physical change
b)
Chemical change
25.
Is making a cake physical or chemical
a)
physical
b)
chemical
c)
ducktile
d)
maluable
26.
heterogeneous mixture in which some of the particles settle out of the mixture upon standing
a)
solution
b)
colloid
c)
solvent
d)
suspension
27.
substance that dissolves the solute
a)
solution
b)
solvent
c)
saturation
28.
substance that dissolves
a)
solvent
b)
solution
c)
solute
d)
unsaturated
29.
Physical or Chemical Property? The temperature of boiling water is 100 degrees Celsius.
a)
Physical
b)
Chemical
c)
Neither
30.
Physical or Chemical Property? The solid form of water is ice.
a)
Physical
b)
Chemical
c)
Neither
31.
Calculate the volume of an object that has a mass of 40g and a density of 2.9g/mL.
a)
13.79 mL
b)
13.79 g
c)
116 mL
d)
116 g
32.
Calculate the mass of an object that has a density of 7.6 g/cm3 and a volume of 150cm3.
a)
19.73 g
b)
19.73 cm3
c)
1140 cm3
d)
1140 g
33.
Calculate the density of a substance that has a mass of 50g and a volume of 25cm3.
a)
.5 g/cm3
b)
1250 g/cm3
c)
2 g/cm3
d)
None of these are correct
34.
What is less dense than yellow
a)
Clear
b)
Red
c)
Red & Clear & Blue
d)
Red & Clear only
35.
Which would be more dense than red?
a)
Blue
b)
Yellow
c)
Blue and Clear
d)
Yellow and Clear
36.
what is an extensive property
a)
that joint over there
b)
a property that changes when the size of the speciman changes
c)
is a physical property of a system that does not depend on the system size or the amount of material in the system
d)
orange juice
37.
What properties that do not depend on the amount of the matter present
a)
density
b)
extensive
c)
intensive
d)
volume
38.
if it reacts with acid what property is it
a)
intensive
b)
extensive
39.
Accuracy is defined as
a)
close repeated measurements
b)
awesome measurements
c)
really good guessing
d)
measurement near the true value
40.
Measurements that are repeated and close to each other can be defined as:
a)
accurate
b)
accurate and precise
c)
precise
d)
estimated
41.
Romy's measurements: 6.02 m, 6. 04 m, 6.03 m
Actual Value: 6.02 m
How would you define her measurements?
Actual Value: 6.02 m
How would you define her measurements?
a)
accurate and precise
b)
accurate
c)
precise
d)
neither
42.
This bullseye demonstrates...
a)
High Accuracy & High Precision
b)
High Accuracy & Low Precision
c)
Low Accuracy & High Precision
d)
Low Accuracy & Low Precision
43.
What are the units for measuring density of a liquid?
a)
grams
b)
m/s2
c)
g/mL
d)
newtons
44.
If the density of brass is 8 g/mL and its volume 8 mL find its mass.
a)
16 grams
b)
24 grams
c)
32 grams
d)
64 grams
45.
Put the liquids in order from most dense to least dense?
a)
4, 3, 2, 1
b)
1, 2, 3, 4
c)
3, 4, 2, 1,
d)
4, 3, 1, 2
46.
How many significant figures does the following number have: 0.002040
a)
6
b)
4
c)
3
d)
2
47.
How many significant figures does the following number have: 0.9870477
a)
8
b)
6
c)
5
d)
7
48.
How many significant figures does the following number have: 100.00210
a)
7
b)
5
c)
10
d)
8
49.
How many sig figs are in 90000 ml
a)
1 sig fig
b)
5 sig figs
c)
4 sig figs
50.
Three different people weigh a standard mass of 2.00 g on the same balance. Each person obtains a reading of 7.32 g for the mass of the standard. These results imply that the balance that was used is ____.
a)
accurate
b)
precise
c)
accurate and precise
d)
neither accurate nor precise
51.
Which of the following measurements is expressed to three significant figures?
a)
0.007 m
b)
7077 mg
c)
7.30 x 10-7 km
d)
0.070 mm
52.
An object is measured to be 3.12g. The accepted value is 4.50g. What is the percentage error for this measurement?
a)
43.1%
b)
30.7%
c)
30.666%
d)
25.1%
53.
How many electrons does potassium K contain? (click to see image)
a)
19
b)
39
c)
20
d)
40
54.
What element is represented in this Bohr Model?
a)
Carbon
b)
Hydrogen
c)
Aluminum
d)
Lithium
55.
How many electrons does Si contain? (click to see image)
a)
14
b)
28
c)
2
d)
None of these
56.
?
a)
Boron
b)
Carbon
c)
Nitrogen
d)
Lithium
57.
?
a)
Lithium
b)
Boron
c)
Carbon
d)
Neon
58.
?
a)
Helium
b)
Hydrogen
c)
Argon
d)
Silver
59.
?
a)
Helium
b)
Oxygen
c)
Sodium
d)
Phosphorous
60.
?
a)
Beryllium
b)
Boron
c)
Barium
d)
Bromine
61.
Neon is which of the following?
a)
Alkali metal
b)
Alkali earth metal
c)
Nobel gas
d)
Halogen
62.
Neon is which of the following?
a)
Alkali metal
b)
Alkali earth metal
c)
Nobel gas
d)
Halogen
63.
Groups and families are the
a)
same
b)
different ones
c)
rows across
d)
noble gases only
64.
List atoms from most number of protons to least number of protons
a)
Ba, Na, Cl
b)
Na, Cs, Cl
c)
Na, Cl, Cs
d)
Ba, Cl, Na
65.
What does the 1 stand for?
a)
Hydrogen
b)
atomic number
c)
atomic mass
d)
atomic explosion
66.
What does the 1.00794 stand for?
a)
Hydrogen
b)
atomic number
c)
atomic mass
d)
atomic explosion
67.
The yellow atoms are called
a)
metals
b)
nonmetals
c)
metalloids
d)
noble gases
68.
The blue atoms are called
a)
metals
b)
nonmetals
c)
metalloids
d)
noble gases
69.
A change that does not result in a new substance.
a)
Physical Change
b)
Chemical Change
70.
Melting a chocolate bar?
a)
Physical Change
b)
Chemical Change
71.
Exploding Fireworks?
a)
Physical Change
b)
Chemical Change
72.
A change where one or more new substances are created.
a)
Physical Change
b)
Chemical Change
73.
The atoms along the staircase are called
a)
metals
b)
nonmetals
c)
metalloids
d)
noble gases
74.
How many neutrons does the isotope of lithium have?
a)
8
b)
3
c)
4
d)
5
75.
How many protons does this isotope of titanium have?
a)
48
b)
22
c)
26
d)
70
76.
What do these isotopes of carbon all have in common?
a)
neutrons & mass number
b)
atomic number and neutrons
c)
atomic number and electrons
d)
protons, atomic number, and mass number
77.
In a correctly written symbol what would be located in the "A" position?
a)
number of neutrons
b)
atomic number
c)
number of electrons
d)
mass number
78.
Calculate the average atomic mass of silver.
a)
106.38649amu
b)
111.91896amu
c)
107.8677amu
d)
121
79.
Copper occurs naturally as Cu-63 and Cu-65. Which isotope is more abundant?
a)
Cu-63
b)
Cu-65
80.
Calculate the average atomic mass of element X when 34% of element X exists as X-272 and the remainder exists as X-274.
a)
185.64amu
b)
273.32amu
c)
272.68amu
d)
27.33amu
81.
An element has two naturally occurring isotopes. One is 10.013 amu and is 19.9% abundant. The other is 11.01 amu and is 80.1% abundant. What is the average atomic mass? What element is it?
a)
9.012, Beryllium
b)
12.011, Carbon
c)
6.941, Lithium
d)
10.812, Boron
82.
J.J. Thompson discovered the ____________. His model is called the plum pudding model which we sometimes call the chocolate chip model.
a)
proton
b)
electron
c)
neutron
d)
nucleus
83.
Ernst Rutherford discovered which part of the atom through the use of gold foil?
a)
Proton
b)
Neutron
c)
Electron
d)
Orbitals
84.
The experiment used by Ernest Rutherford to discover the nucleus of an atom.
a)
Cathode Ray Experiment
b)
Gold Foil Experiment
c)
Reflector Experiment
d)
Plum Pudding Experiment
85.
What contribution did John Dalton make to atomic theory?
a)
He discovered that every atom was positively charged.
b)
He discovered that every element consisted of one type of atom.
c)
He discovered that atoms had nuclei.
d)
He discovered that atoms could be divided into smaller parts.
86.
What scientist is best known for his "Plum Pudding" model of the atom?
a)
J.J. Tomson
b)
Ernest Rutherford
c)
John Dalton
d)
Democritus
87.
Some atoms are large enough to see with your eyes.
a)
true
b)
false
88.
What element is this? What is the mass number of this atom?
a)
sodium, 23
b)
magnesium, 23
c)
magnesium, 12
d)
sodium, 11
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