NEW
Font size
WorksheetsScience Semester Test Study
Total questions: 58
Worksheet time: 29mins
Matter can be defined as anything that
has mass and takes up space
can be seen and touched
can be weighted
contains kinetic energy
A substance that cannot be broken down into a simpler substance is a(n)
compound
element
atom
mixture
Which of the following is an example of a gas-liquid mixture?
the air we breathe
a helium balloon
a carbonated drink
ice cubes
Which of the following is an element?
steel
bronze
iron
brass
Which of the following is an example of a chemical property?
reactivity with oxygen
solubility in water
density
color
Unlike a mixture, a pure substance has
atoms
molecules
a specific size
a fixed composition
Which of the following is not an example of a physical property?
freezing point
reactivity
boiling point
density
A substance has a mass of 360 g and a volume of 7.5 ml. What is its density?
2700 g/ml
480 g/ml
270 g/ml
48 g/ml
Digesting food is an example of
physical change
chemical change
change of state
buoyancy
Ice floats in water because it is ________ _______ than water.
less dense
more dense
Temperature is the measure of average _________ energy of the particles in the object.
thermal
kinetic
potential
chemical
The process of a liquid becoming a solid is called
sublimation
condensation
evaporation
freezing
The process of a liquid becoming a gas is called
melting
condensation
evaporation
freezing
A state of matter that is not a fluid is
water
gas
liquid
solid
Which state of matter has a definite volume, but not shape?
plasma
gas
solid
liquid
Archimedes' principle states that the buoyant force on a(n) _________ is equal to the weight of the displaced volume of fluid.
object submerged in a fluid
object on a solid
fluid mixing with liquid
substance dissolving in a fluid
An object that floats in a fluid is ____________ the fluid.
less dense than
more dense than
being mixed in
being dissolved in
Unlike a gas, a plasma.
is a fluid
has no definite shape
has no definite volume
conducts electric current
Charles's Law relates the volume of a gas to its
container
pressure
molecular composition
temperature
The ________ theory of matter states that matter is made of particles whose speed is dependent on their temperature and size.
kinetic
chemical
potential
The buoyant force exerts a(n) ___________ force on any object immersed in or floating on a fluid.
upward
downward
Pascal's Principle states that a fluid in equilibrium within a vessel exerts __________ of equal intensity in all directions.
pressure
volume
force
movement
Bernoulli's Principle describes the phenomenon of fluid pressure decreasing when its speed ___________.
decreases
increases
inclines
declines
Boyle's Law relates the pressure of a gas to its ____________.
pressure
volume
size
shape
Gay-Lussac's Law relates the temperature of a gas to the ___________ of a gas.
volume
pressure
shape
size
Dalton's atomic theory stated that every element was made of atoms that could not be subdivided, atoms of the same element are alike, and
atoms are made of protons, neutrons, and electrons
the nucleus is the center of the atom.
atoms can join to form molecules.
atoms are constantly in motion.
Which statement about the atomic nucleus is correct?
The nucleus is made of protons and neutrons and has a negative charge.
The nucleus is made of protons and neutrons and has a positive charge.
The nucleus is made of electrons and has a positive charge.
The nucleus is made of electrons and has a negative charge.
According to Bohr's model of the atom, electrons behave like
waves on a vibrating string
planets orbiting the sun
light energy in a vacuum
planets rotating on their axes
The order of elements in the periodic table is based on
atomic mass
the electric charge of the nucleus
the number of protons in the nucleus
the number of neutrons in the nucleus
Ionization refers to the process of
losing or gaining electrons
losing or gaining protons
changing from one period to another
turning lithium into fluoride
Oxygen's atomic number is 8. This means that an oxygen atom has
eight protons in its nucleus
eight neutrons in its nucleus
a total of eight neutrons and protons
a total of eight neutrons and electrons
Which statement about an element's average atomic mass is correct?
It is determined by counting the number of isotopes in a sample of the element.
It is equal to one-twelfth the mass of the most common isotope.
It is a weighted average, so common isotopes have a greater effect than uncommon ones.
It is based on an isotope's charge, so negatively charged isotopes have a greater effect than positive ones.
Which statement about the alkali metals is correct?
They are located in the left-most column of the periodic table.
They are extremely nonreactive.
They are usually gases.
They form negative ions with a 1 -charge.
Which statement about noble gases is correct?
They form compounds with very bright colors.
They exist as single atoms rather than as molecules.
They are highly reactive with both metals and nonmetals.
They are extremely rare in nature.
Group 18 noble gases are inert because
they readily form positive ions.
they can have either a positive or a negative charge.
their outermost energy level is missing one electron.
their outermost energy level is full.
A mole is an SI base unit that describes the
mass of a substance.
amount of a substance.
volume of a substance.
electric charge of a substance.
If the atomic mass of carbon is 12 amu, 1 mole of pure carbon will have a mass of
6 g.
6 mol.
12 g.
12 mol.
The word atom_ comes from a Greek word that means "unable to be ____________"
combined
eaten
divided
seen
The nucleus of an atom has a(n) __________ electric charge.
neutral
positive
negative
Bohr's model of the atom compares electrons to __________ .
planets
clouds
protons
electrons
Noble gases are nonreactive gaseous elements that are located in Group __________ of the periodic table.
2
16
18
19
The __________ is the SI unit that is used for counting small particles, such as atoms.
mole
mol
gram
ounce
In a metallic bond, the nucleus of one atom is attracted by a nearby atom's
neutrons
protons
energy structure
electrons
Solid ionic compounds have very high melting points because they
are positively charged
contain metallic elements
are made of elements that are solid at room temperature
contains charged ions that are locked tightly together
The simplest organic compound is
asprine
table salt
methane
salt
In which substance do the molecules have the strongest attractions to one another?
sugar, a solid
hydrogen, a gas
water, a liquid
sulfuric acid, a liquid
The name for the compound with the formula CuBr_2 would be written as
a. copper(II) bromide.
b. copper(I) bromide.
c. copper bromine.
d. copper(III) bromide.
A protein is a polymer that is made of
DNA
amino acids
simple sugars
nitrogen and carbon dioxide
In ionic compounds, the positively charged ions are formed from__________ elements. (What class?)
metalloids
metal
non-metal
The trade winds blow from east to west and are found in the subtropic regions from about _____degrees latitude to the equator
30
60
90
0
Wind belts from 60-90 degrees latitude are called _____.
polar easterlies
polar westerlies
trade winds
horse latitudes
sinking air
has lower pressure
causes evaporation
decreases in temperature
all of these
The global winds blow at
a. The top of atmospheric circulation cells
b. The equator only
c. The base of atmospheric circulation cells
d. None of these
If the Coriolis force was not present, the air in the Hadley Cell would blow in the _____ direction.
a. East-West
b. South-West
c. North-East
d. North-South
What is the primary source of energy for the global winds?
the sun
doldrums
horse latitudes
the ocean
Gabby is standing on a beach on a breezy night. She realizes that the wind she feels is coming primarily from the land and moving towards the sea. If she puts one foot in the water, keeping the other foot on the sand, which of the following will she most likely notice?
a. The water is warmer than the sand
b. Both the sand and the water are very warm
c. The sand is warmer than the water
d. Both the sand and the water are very cold
Winds ALWAYS blow from
areas of high pressure to low pressure.
areas of low pressure to high pressure.
west to east.
east to west.
When warm air rises ____________ air rushes in to fill its place.
warm
cool
less dense
all of the above
