WorksheetsPrinciples of Chemistry and Physics Final Exam
Total questions: 92
Worksheet time: 46mins
Name
Class
Date
1.
In the laboratory, chemicals that you are finished with should be________.
a)
mixed together and dumped into a designated container
b)
returned to their original containers
c)
poured into the sink
d)
disposed of as directed by your teacher
2.
The reason for wearing safety goggles in a laboratory is to____.
a)
improv eyesight
b)
protect the experimenter from burns
c)
protect the eyes from harmful substances
d)
protect clothing from chemical spills
3.
Physical science is the study of___.
a)
Energy
b)
matter and energy
c)
matter
d)
living things
4.
A testable prediction about a possible solution to a problem is called___.
a)
a conclusion
b)
an experiment
c)
a hypothesis
d)
a variable
5.
Arrange each of the following in order from largest to smallest
a)
centimeter, kilometer, meter, millimeter
b)
millimeter, centimeter, kilometer, meter
c)
kilometer, millimeter, meter, centimeter
d)
kilometer, meter, centimeter, millimeter
6.
In a graph, the variable on the horizontal axis is the___.
a)
variable with the longest range
b)
variable with the smallest range
c)
dependent variable
d)
independent variable
7.
Matter that has a definitive volume and a definite shape is a ___.
a)
solid
b)
liquid
c)
gas
d)
plasma
8.
a gas-like mixture with no definite shape or volume that is made up of positively and negatively charged particles is a ___.
a)
solid
b)
liquid
c)
gas
d)
plasma
9.
As a sample of matter is heated, its particles___.
a)
stop moving
b)
move more slowly
c)
move more quickly
d)
are unaffected
10.
The color of ink is a ___.
a)
Chemical property
b)
physical property
c)
chemical change
d)
physical change
11.
Three examples of physical changes are ___.
a)
freezing of water, evaporation of gasoline, and rusting of nails
b)
boiling of water, bursting a balloon, and melting of a candle
c)
Sawing of wood, crushing of a can, and toasting a marshmellow
d)
Burning of gasoline, rotting of an egg, and exploding fireworks
12.
___ is another name of a homogenous mixture.
a)
Suspension
b)
Substance
c)
Solution
d)
Liquid
13.
When two or more substances are combined so that each substance maintains its own properties, the result is a(n) ___
a)
chemical change
b)
element
c)
compound
d)
mixture
14.
When gasoline is burned in an engine ___.
a)
gasoline evaporates
b)
new substances are formed
c)
mass is lost
d)
mass is gained
15.
Which of the following is not simply a change of state?
a)
melting
b)
burning
c)
freezing
d)
boiling
16.
which of the following is a physical property?
a)
Flammability
b)
Density
c)
Tendency to rust
d)
None of the above
17.
Which of the following is a physical change?
a)
burning
b)
cooking
c)
rusting
d)
crushing
18.
Pure substances include__.
a)
elements only
b)
elements and compounds
c)
compounds and mixtures
d)
elements and mixtures
19.
Which of the following is an example of a heterogeneous mixture?
a)
sand in water
b)
Kool Aid
c)
salt water
d)
air
20.
Which of the following is an example of a homogeneous mixture?
a)
oil and water
b)
salt and pepper
c)
sawdust and nails
d)
salt water
21.
How many periods are in the periodic table?
a)
7
b)
8
c)
18
d)
109
22.
How many groups are in the periodic table?
a)
7
b)
8
c)
18
d)
109
23.
The elements in group 1 of the periodic table are called the
a)
halogens
b)
alkali metals
c)
alkaline earth metals
d)
nobel gases
24.
The element that appears with the group 1 elements, but is not a metal is
a)
cesium
b)
helium
c)
hydrogen
d)
sodium
25.
which of the following particles is normally found outside of the nucleus of the atom?
a)
electron
b)
quark
c)
neutron
d)
proton
26.
An ion always contains an
a)
unequal number of protons and electrons
b)
equal number of protons and electrons
c)
unequal number of protons and neutrons
d)
equal number of protons and neutrons
27.
Two atoms are isotopes if they contain
a)
different numbers of electrons
b)
different numbers of protons and different numbers of neutrons
c)
the same number of protons but different numbers of neutrons
d)
the same number of neutrons but different numbers of protons
28.
An element that is a gas, is brittle, and a por conductor of heat and electricity at room temperature is most likely a ___.
a)
metal
b)
metalloid
c)
nonmetal
d)
isotope
29.
The attraction that forms between atoms when they share electrons is known as a(n) ____ bond.
a)
ionic
b)
covalent
c)
metallic
d)
net
30.
How many electrons are needed in the outer energy level of most atoms for the atom to be chemically stable?
a)
2
b)
4
c)
6
d)
8
31.
What kind of chemical bond is formed when electrons are transferred from atom to atom?
a)
ionic
b)
covalent
c)
metallic
d)
hydrogen
32.
Why do noble gases not form compounds readily?
a)
They have no electrons
b)
They have empty outer energy levels
c)
they have seven electrons in their outer energy level
d)
their outer energy level is completely filled with electrons
33.
What is the total number of atoms in the compound Ca(ClO ₃) ₂
a)
8
b)
3
c)
7
d)
9
34.
Each substance to the right of the arrow in a chemical equation is a ___.
a)
products
b)
Catalyst
c)
precipitate
d)
reactant
35.
A chemical reaction in which heat energy is given off is ___.
a)
flammable
b)
endothermic
c)
exothermic
d)
endergonic
36.
Metals can be used as wire because they are
a)
alloys
b)
malleable
c)
metallic
d)
ductile
37.
A certain atom has 26 protons, 26 electrons, and 30 neutrons. Its mass is ___.
a)
56
b)
52
c)
26
d)
82
38.
The only metal that is liquid at room temperature is
a)
copper
b)
calcium
c)
mercury
d)
bromine
39.
Which of the following is true of a chemical reaction?
a)
only physical changes occur
b)
new substances must form
c)
only changes of state occur
d)
Chemical properties remain the same
40.
To determine the mass of an atom, you need to
a)
add protons + electrons
b)
add electrons + neutrons
c)
add protons + neutrons
d)
add protons + electrons + neutrons
41.
Motion is a change in ___.
a)
time
b)
speed
c)
velocity
d)
position
42.
The speed that you read on a speedometer is
a)
instantaneous speed
b)
constant speed
c)
average speed
d)
velocity
43.
A merry-go-round moves at a constant speed, but at a changing
a)
velocity
b)
balanced force
c)
inertia
d)
unbalanced force
44.
A horizontal line on a velocity/time graph shows ___ acceleration.
a)
positive
b)
negative
c)
changing
d)
zero
45.
In the absence of air, a penny and a feather that are dropped from the same height at the same time will ___.
a)
fall at different rates
b)
fall at the same rate
c)
float
d)
not have momentum
46.
When you graph the motion of an object, you put ___ on the horizontal axis and ___ on the vertical axis.
a)
speed, time
b)
distance, time
c)
time, speed
d)
time, distance
47.
A feather will fall through the air more slowly than a brick because of ___.
a)
air resistance
b)
gravity
c)
inertia
d)
momentum
48.
As you get farther from the center of the Earth, your weight will ___.
a)
decrease
b)
increase
c)
remain the same
d)
can't tell from te information given
49.
Forces that are equal in size, but opposite in direction are ___.
a)
balanced forces
b)
frictional forces
c)
inertial forces
d)
net forces
50.
Newton's first law of motion states that an object remains at rest, unless a(n) ___ force acts on it.
a)
balanced
b)
frictional
c)
gravitational
d)
unbalanced
51.
The upward force acting on an object falling through the air is ___.
a)
air resistance
b)
inertia
c)
gravity
d)
terminal velocity
52.
Ca ⁺² has
a)
20 protons and 20 electrons
b)
22 protons and 20 electrons
c)
20 protons and 18 electrons
d)
18 protons and 20 electrons
53.
A charged atom is called a(n)
a)
isotope
b)
quark
c)
ion
d)
element
54.
Carbon -14 has
a)
14 protons and 14 neutrons
b)
6 protons and 8 neutrons
c)
8 protons and 6 electrons
d)
7 protons and 7 electrons
55.
An elements identity is based on its
a)
number of electrons
b)
mass number
c)
number of neutrons
d)
atomic number
56.
The elements in group 3 through 12 of the periodic table are the ___.
a)
the transition metals
b)
inner transition metals
c)
alkaline earth metals
d)
halogens
57.
Particles that make up protons and neutrons are ___.
a)
electrons
b)
isotopes
c)
quarks
d)
ions
58.
Compared to photons of red light, photons of violet light ___.
a)
have more energy
b)
have less energy
c)
have equal energy
d)
all of the above
59.
Compared to microwaves, radio waves have ___.
a)
longer wavelengths
b)
phonons with more energy
c)
higher frequencies
d)
all of the above
60.
Which of the following is not a form of electromagnetic radiation?
a)
x-rays
b)
gamma rays
c)
sound waves
d)
visible light
61.
The brightness or intensity of light depends on its
a)
frequency
b)
amplitude
c)
wavelength
d)
speed
62.
Wavelength is defined as the distance between ___.
a)
the trough and crest of a wave
b)
the beginning and ends of two waves that are next to each other
c)
the crest of one wave to the trough of the next wave
d)
the crest of one wave to the crest of the next wave
63.
Which color of light has the highest frequency?
a)
blue
b)
red
c)
yellow
d)
violet
64.
Which of the following has the longest wavelength?
a)
ultraviolet
b)
infrared
c)
x-rays
d)
gamma rays
65.
Compared to gamma rays, x-rays have ___.
a)
higher frequencies
b)
photons with more energy
c)
longer wavelengths
d)
all of the above
66.
We perceive infrared waves as ___.
a)
coldness
b)
light
c)
warmth
d)
all of the above
67.
What are the building blocks of all matter?
a)
forces
b)
atoms
c)
magnetic felds
d)
kinetic and potential energy
68.
What is the most important rule of safety?
a)
never work with chemicals
b)
always use unbreakable glassware
c)
always follow your teachers' instructions and lab directions exactly
d)
never do experiments that involve hot objects
69.
Which of the following is NOT a pure substance?
a)
milk
b)
oxygen
c)
water
d)
carbon dioxide
70.
a mixture that appears to conatin only one substance is a(n)
a)
homogenous mixture
b)
heterogeneous mixture
c)
compound
d)
element
71.
which of the following is a chemical change?
a)
ice melting
b)
ice being carved
c)
water boiling
d)
water breaking down into hydrogen and oxygen
72.
If you move a substance from one container to another and its volume changes, the substance is a ___.
a)
solid
b)
gas
c)
solution
d)
liquid
73.
which of the following is unique for any given element?
a)
The number of neutrons
b)
the charge on the electron
c)
the number of protons
d)
the mass of the neutron
74.
Which general statement does NOT apply to metals?
a)
most metals are ductile
b)
mot metals are malleable
c)
most metals are brittle
d)
most metals are good conductors of heat and electricty
75.
As you move from left to right across a period, the number of valence electrons ___.
a)
increases
b)
stays the same
c)
increases then decreases
d)
decreases
76.
A person walks 1 mile everyday for exercise, leaving her front porch at 9:00am and retruning to her front porch at 9:25 am. What is her total displacement of her daily walk?
a)
1 mile
b)
0
c)
25 minutes
d)
none of the above
77.
a car traveled 60km in 2 hours, 84km in the next hour, and then 68km in 2 hours before reaching its destination. What was the cars average speed?
a)
212 km/h
b)
42 km/h
c)
148 km/h
d)
1060 km/h
78.
the property of matter that resists change in motion is called
a)
fricition
b)
gravity
c)
inertia
d)
weight
79.
If a force of 12N is applies to an object with a mass of 2kg, the object will accelerate at___. (F= m xa )
a)
0.17 m/s²
b)
24 m/s²
c)
6 m/s²
d)
12 m/s²
80.
Chlorine is in the ___ family
a)
noble gas
b)
alkali metal
c)
halogen
d)
boron family
81.
most noble gases have ___ valence electrons
a)
18
b)
8
c)
7
d)
5
82.
The color that absorbs all colors of light and reflect little to no light to your eye is___.
a)
white
b)
violet
c)
black
d)
red
83.
Heat is the transfer of thermal energy from one object to another because of a difference in
a)
specific heat
b)
phase
c)
temperature
d)
waste heat
84.
If a material absorbs all frequencies of light waves EXCEPT green, what color will be perceived by the observer?
a)
green
b)
black
c)
yellow
d)
white
85.
A soundwave is an example of a ___.
a)
transverse wave
b)
longitudinal wave
c)
standing wave
d)
surface wave
86.
ALL electromagnetic waves have the same
a)
frequency
b)
wavelength
c)
speed
d)
energy
87.
If an atom gains electrons, it becomes a(n)
a)
positively charged ion
b)
negatively charged ion
c)
neutral atom
d)
isotope
88.
How is 0.00069 written in scientific notation?
a)
69 x 10⁵
b)
6.9 x 10⁴
c)
0.69 x 10³
d)
6.9 x 10⁻⁴
89.
What are 6cm equal to?
a)
600 m
b)
6/10 mm
c)
60 mm
d)
600mm
90.
The phase change that is the reverse of condensation is ___.
a)
freezing
b)
sublimation
c)
vaporization
d)
melting
91.
The phase change in which a solid turns into a liquid is
a)
freezing
b)
sublimation
c)
vaporization
d)
melting
92.
Which piece of lab equipment would you use to most accurately measure 85 mL of water?
a)
beaker
b)
graduated cylinder
c)
electronic balance
d)
erlenmeyer flask
100 %
