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WorksheetsFall Semester Review Part 1
Total questions: 60
Worksheet time: 31mins
Name
Class
Date
1.
_________ can NOT be separated under normal conditions.
a)
Elements
b)
Compounds
c)
Mixtures
2.
H2O is an example of a __________.
a)
element
b)
compound
3.
A ________ is made up of two or more elements, chemically combined in specific ratios.
a)
heterogeneous mixture
b)
homogeneous mixture
c)
compound
4.
________ is anything that takes up space and has mass.
a)
Density
b)
Matter
c)
Acceleration
d)
Speed
5.
_______ is made up of only one kind of atom.
a)
Compound
b)
Element
c)
Mixture
6.
Tap water (water, salt & minerals) is an example of a __________.
a)
element
b)
compound
c)
mixture
7.
NaCl is an example of a __________.
a)
element
b)
compound
8.
Au is an example of an __________.
a)
element
b)
compound
9.
A ________ is two or more substances physically combined.
a)
mixture
b)
compound
c)
element
10.
A _________ mixture is well mixed & you cannot see the individual parts. Ex. Lemonade
a)
homogeneous
b)
heterogeneous
11.
_________ can be separated through physical means.
a)
Compounds
b)
Mixtures
c)
Elements
12.
A _________ mixture is not mixed well & you can see the individual parts. Ex. salad
a)
homogeneous
b)
heterogeneous
13.
A substance that has a definite shape and volume.
a)
evaporation
b)
gas
c)
liquid
d)
solid
14.
When gas turns into a liquid.
a)
evaporation
b)
condensation
c)
volume
d)
temperature
15.
A change in some properties of matter without forming a different kind of matter.
a)
chemical change
b)
physical change
16.
A substance without a definite volume or shape.
a)
mixture
b)
liquid
c)
temperature
d)
gas
17.
A mixture in which substances are spread out evenly and will not settle.
a)
volume
b)
solution
c)
liquid
d)
temperature
18.
Ernst Rutherford discovered which part of the atom through the use of gold foil?
a)
Proton
b)
Neutron
c)
Electron
d)
Orbitals
19.
All matter is made of what?
a)
energy
b)
atoms
c)
electrons
d)
compounds
20.
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
21.
Who came up with this model of an atom pictured?
a)
J.J. Thompson
b)
Ernest Rutherford
c)
Neils Bohr
d)
James Chadwick
22.
What does the nucleus of an atom contain?
a)
Electrons and neutrons
b)
Protons and neutrons
c)
Neutrinos and positrons
d)
DNA and RN
23.
This is a negatively charged particle found outside the nucleus
a)
Electron
b)
Proton
c)
Neutron
24.
The weighted average of the masses of all naturally occurring isotopes of an element is
a)
Atomic number
b)
Atomic Mass
c)
Atomic weight
25.
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.
26.
John Dalton modeled the atom as a...
a)
tiny solid sphere, with a known mass
b)
a hollow sphere
c)
a marble in the middle of a stadium
d)
planets orbiting around a star
27.
Which is the correct sequence of the scientists who made major changes in the model of the atom?
1-JJ Thomson
2-Erwin Schrodinger
3-John Dalton
4-Niels Bohr
5-Ernest Rutherford
1-JJ Thomson
2-Erwin Schrodinger
3-John Dalton
4-Niels Bohr
5-Ernest Rutherford
a)
2, 1, 4, 3, 5
b)
3, 1, 5, 4, 2
c)
5, 3, 2, 1, 4
d)
4, 3, 2, 1, 5
28.
The majority of an atom's mass exists where?
a)
In the nucleus
b)
In the electron cloud
c)
In the space between the nucleus and the electrons
d)
In the neutrons
29.
How many significant figures does the following number have: 2001800.
a)
1
b)
4
c)
6
d)
7
30.
How many significant figures does the following number have: 0.002040
a)
6
b)
4
c)
3
d)
2
31.
Volume?
a)
63.5 mL
b)
63 mL
c)
63.55 mL
d)
6 mL
32.
The closeness of a measurement to the true value is ___.
a)
precision
b)
accuracy
c)
error
d)
dimensional analysis
33.
The prefix "kilo" means ___.
a)
10
b)
100
c)
1/1000
d)
1000
34.
What is the density of an object whose mass is 10g and volume is 5mL?
D = m/V
D = m/V
a)
5 g/mL
b)
15 g/mL
c)
0.5 g/mL
d)
2 g/mL
35.
The prefix "milli" means ____.
a)
1/1000
b)
1000
c)
1/100
d)
1/10
36.
Convert 42mL to L.
a)
4200
b)
0.42
c)
0.042
d)
0.0042
37.
Convert 42kg to g.
a)
0.0042
b)
0.042
c)
42000
d)
4200
38.
A way to solve problems using units of measurement is called __.
a)
percent error
b)
controlled experiment
c)
unit conversions
d)
dimensional analysis
39.
A student measures an object's density as 2g/mL. The accepted value is 1g/mL. What is the percent error?
% error = 100 ⋅ |experimental - accpeted| / accpeted
% error = 100 ⋅ |experimental - accpeted| / accpeted
a)
5%
b)
10%
c)
50%
d)
100%
40.
The measure of the amount of matter in a substance is ___.
a)
mass
b)
volume
c)
density
d)
weight
41.
This bullseye demonstrates...
a)
High Accuracy & High Precision
b)
High Accuracy & Low Precision
c)
Low Accuracy & High Precision
d)
Low Accuracy & Low Precision
42.
What is the name of this glassware?
a)
beaker
b)
flask
c)
graduated cylinder
d)
test tube
43.
What is the name of this glassware?
a)
buret
b)
erlenmeyer flask
c)
graduated cylinder
d)
beaker
44.
Which one is a compound?
a)
gold
b)
a magnesium sulfate solution
c)
neutrons
d)
water
45.
Which one is a mixture?
a)
gold
b)
a magnesium sulfate solution
c)
neutrons
d)
water
46.
Which one is an element?
a)
gold
b)
a magnesium sulfate solution
c)
neutrons
d)
water
47.
Mixtures
a)
cannot be separated
b)
can be separated through chemical reactions
c)
can be separated by physical reactions
d)
don't exist
48.
Compounds
a)
cannot be separated
b)
can be separated through chemical reactions
c)
can be separated by physical reactions
d)
don't exist
49.
Elements
a)
cannot be separated
b)
can be separated through chemical reactions
c)
can be separated by physical reactions
d)
don't exist
50.
Compounds are made of:
a)
atoms
b)
elements
c)
molecules
d)
mixtures
51.
Elements are made of:
a)
atoms
b)
compounds
c)
molecules
d)
mixtures
52.
All of the following are physical properties of matter EXCEPT ___.
a)
mass
b)
color
c)
melting point
d)
ability to rust
53.
Which of the following is a physical change?
a)
corrosion
b)
explosion
c)
evaporation
d)
rotting of food
54.
Which state of matter is characterized by having an indefinite shape, but a definite volume?
a)
gas
b)
liquid
c)
solid
d)
none of the above
55.
Which of the following is true about homogeneous mixtures?
a)
They are known as solutions
b)
they consist of two or more phases
c)
they have compositions that never vary
d)
they are always liquids
56.
Which of the following is a homogeneous mixture?
a)
Salt water
b)
beef stew
c)
sand and water
d)
soil
57.
A substance that can be separated into two or more substances only by a chemical change is a(an) ___.
a)
solution
b)
element
c)
mixture
d)
compound
58.
Made of two or more types of atoms bonded together
a)
element
b)
compound
c)
mixture
d)
solvent
59.
Which of the following is a physical property?
a)
ability to burn
b)
ability to rust
c)
density
d)
how a metal reacts with acid
60.
In which state of matter do the particles spread apart and fill all the space available to them?
a)
solid
b)
liquid
c)
gas
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