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WorksheetsChemistry, First Semester Review
Total questions: 50
Worksheet time: 30mins
Name
Class
Date
1.
Which of the following is NOT an example of matter?
a)
Air
b)
Heat
c)
Smoke
d)
Water Vapor
2.
All of the following are physical properties of matter EXCEPT
a)
Mass
b)
Color
c)
Melting Point
d)
Ability to rust
3.
A vapor is which state of matter?
a)
Solid
b)
Liquid
c)
Gas
d)
Plasma
4.
Which state of matter has a definite volume and takes the shape of its container?
a)
Solid
b)
Liquid
c)
Gas
d)
Liquid and Gas
5.
Which state of matter takes both the shape and volume of its container?
a)
Solid
b)
Liquid
c)
Gas
d)
Both Liquid and Gas
6.
Which state of matter expands when heated and is easy to compress?
a)
Gas
b)
Liquid
c)
Solid
d)
Solids, Liquids, and Gases
7.
An example of a homogenous mixture is
a)
Water
b)
Stainless Steel
c)
Noodle Soup
d)
Oxygen
8.
A chemical change occurs when a piece of wood
a)
is split
b)
is painted
c)
decays
d)
is cut
9.
What is the SI unit of mass?
a)
liter
b)
joule
c)
candela
d)
kilogram
10.
Density is found by dividing
a)
mass by volume
b)
volume by mass
c)
mass by area
d)
area by mass
11.
The nucleus of an atom is
a)
the central core and is composed of protons and neutrons
b)
positively charged and has more protons than neutrons
c)
negatively charged and has a high density
d)
negatively charged and has a low density
12.
In Bohr's model of the atom, where are the electrons and protons located?
a)
The electrons move around the protons, which are at the center of the atom.
b)
The electrons and protons move throughout the atom
c)
The electrons occupy fixed positions around the protons, w hich are at the center of the atom
d)
The electrons and protons are located throughout the atom, but they are not free to move
13.
Stable electron configurations are likely to contain
a)
filled energy sublevels
b)
fewer electrons than unstable configurations
c)
unfilled s orbitals
d)
electrons with a clockwise spin
14.
The modern periodic table is arranged in order of increasing atomic
a)
mass
b)
charge
c)
number
d)
radius
15.
Of the elements, Pt, V, Li, and Kr, which is a nonmetal?
a)
Pt
b)
V
c)
Li
d)
Kr
16.
The atomic number of an element is the total number of which particles in the nucleus?
a)
neutrons
b)
protons
c)
electrons
d)
protons and electrons
17.
The SI base unit of length is the
a)
gram
b)
foot
c)
yard
d)
meter
18.
A description of how close a measurement is to its true value
a)
accuracy
b)
precision
c)
significant figures
d)
explanation
19.
An atom's ability to undergo chemical reactions is determined by its
a)
protons.
b)
innermost electrons.
c)
neutrons.
d)
outermost electrons.
20.
Aluminum has _ valence electrons.
a)
7
b)
1
c)
6
d)
3
21.
In an experiment the numerical data is known as
a)
quantitive data
b)
qualitative data
22.
The information in an experiment that describes color, odor, or shape is known as
a)
quantitative data
b)
qualitative data
23.
The SI base unit of mass is the
a)
kilogram
b)
pound
c)
ounce
d)
meter
24.
Postive ions are called
a)
anions
b)
positrons
c)
alpha
d)
cations
25.
A description of how close measurements are to each other is
a)
accuracy
b)
closeness
c)
precision
d)
target location
26.
The "s" orbital can hold
a)
2 electrons
b)
4 electrons
c)
6 electrons
d)
10 electrons
27.
An atom has 12 protons, 12 electrons and 14 neutrons. What is the mass number?
a)
12
b)
24
c)
26
d)
38
28.
a copper penny turning greenish after a few years.
a)
Chemical Change
b)
Physical Change
29.
Mendeleev arranged the periodic table by...?
a)
color
b)
increasing atomic mass
c)
increasing atomic number
d)
density
30.
What does it mean when an element is happy?
a)
They have 8 protons
b)
They have 8 valence electrons (a full octet)
c)
They have 8 protons
d)
They have 8 neutrons
31.
What element is represented in this Bohr Model?
a)
Carbon
b)
Hydrogen
c)
Aluminum
d)
Lithium
32.
Scientist who first came up with the idea and term "atom".
a)
Dalton
b)
Bohr
c)
Einstein
d)
Democritus
33.
How are covalent bonds explained?
a)
When one atom takes the other atom's electron
b)
When the atom shares an electron with an another atom
c)
When the two nucleus merge
d)
When the neutrons leave the nucleus
34.
States that it is not possible to know precisely both the velocity and the position of a particle at the same time.
a)
Hund's rule
b)
Pauli exclusion principle
c)
Heisenberg uncertainty principle
d)
Aufbau principle
35.
The smallest particle of an element that retains the properties of that element is a(n)
a)
atom
b)
electron
c)
proton
d)
neutron
36.
Which atomic particle has a positive charge?
a)
Proton
b)
Neutron
c)
Electron
37.
Which subatomic particle is negatively charged?
a)
proton
b)
atom
c)
neutron
d)
electron
38.
Which subatomic particle has a neutral charge?
a)
Proton
b)
Neutron
c)
Electron
39.
The particles that are found in the nucleus of an atom are
a)
neutrons and electrons
b)
electrons only
c)
protons and neutrons
d)
protons and electrons
40.
All atoms of the same element have the same
a)
number of neutrons
b)
number of protons
c)
mass number
d)
mass
41.
The sum of the protons and neutrons in an atom equals the
a)
atomic number
b)
nuclear number
c)
average atomic mass
d)
mass number
42.
Isotopes of the same element have different
a)
number of neutrons
b)
number of protons
c)
number of electrons
d)
atomic number
43.
The central region of an atom where neutrons and protons are is the _________.
a)
nucleus
b)
electron cloud
c)
core
d)
center
44.
Which color of visible light has the longest wavelength (less energy)?
a)
red
b)
yellow
c)
green
d)
blue
45.
Which color of visible light has the shortest wavelength (most energy)?
a)
yellow
b)
green
c)
violet
d)
red
46.
A mixture that does not look the same throughout:
a)
heterogeneous mixture
b)
homogeneous mixture
c)
the periodic table
d)
water
47.
Any substance that has a definite shape and definite volume is a(n)...
a)
Solid
b)
Liquid
c)
Gas
d)
Plasma
48.
Any substance that has an indefinite shape and a definite volume is a(n)...
a)
Solid
b)
Liquid
c)
Gas
d)
Plasma
49.
Any substance that has an indefinte shape and indefinite volume is a(n)...
a)
Solid
b)
Liquid
c)
Gas
d)
Plasma
50.
If a solution has a pH of 4, the solution is
a)
neutral
b)
acidic
c)
basic
d)
saturated
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