WorksheetsPHSC 100 - Midterm Review
Total questions: 88
Worksheet time: 44mins
What is 0 degrees C in Fahrenheit?
32
18
45
212
The metric system uses multiples of
12
20
5
10
The metric system is most commonly used in the USA
True
False
Scientists most commonly use the metric system.
True
False
Convert 16 kL to L
160 L
1.6 L
16000 L
0.016 L
What is the first step in a scientific investigation?
Form a hypothesis
Identify a problem/ question
Communicate with peers
Form a conclusion
What is a cost/ benefit analysis?
A method of decision making
A step in the scientific method
An investigation into technology
What is a controlled variable?
Something that is changed by the scientist in an experiment.
An observation gathered by the senses.
Something that you try to keep the same in an experiment.
Something that changes as a result of the experiment.
What is a manipulated variable?
Something that is changed by the scientist in an experiment.
An observation gathered by the senses.
Something that you try to keep the same in an experiment.
Something that changes as a result of the experiment.
What is a responding variable?
Something that is changed by the scientist in an experiment.
An observation gathered by the senses.
Something that you try to keep the same in an experiment.
Something that changes as a result of the experiment.
Name the correct order of the metric measurements.
kilo, hecto, deci, inch, deca, centi, mili
hecto, kilo, deca, meter, deci, milli, centi
deca, hecto, mili, unit, deci, centi, kilo
kilo, hecto, deca, unit, deci, centi, mili
What is the scientific theory?
A hunch about something that has occurred in nature.
Verifiable laws and that can be proven true.
An explanation that is accepted because it has a good amount of evidence.
What is an observation?
Any information gathered with the senses
Getting the same results when an experiment is repeated
Rules for deciding between right and wrong
Evidence that supports a hypothesis
What is matter?
A substance that makes up what you see
A nice thing to say to a friend when they look sad
Emotions
Anything that uses your senses
Which of the following is NOT an sign of a chemical change?
color change
solid produced out of a solution
gas bubbles released
large decrease in solution amount
Your mass is different on Earth than it is on the Moon.
True
False
What does ' The Law of Conversion of Mass' tell us?
You cannot create or destroy gravity.
You cannot create or destroy weight.
You cannot create or destroy matter.
What is an atom?
The smallest unit of matter.
A chemical for nuclear energy.
The mixture of multiple elements.
A compound forms when
two or more elements combine chemically.
two atoms explode.
water mixes with air.
compounds mix with matter.
The smallest particle of an element that still has the element's properties is a ____________.
crystal
molecule
compound
atom
What is a molecule?
two or more atoms bonded together
anything that has mass or volume
a measure of how much mass is contained in a given volume
Which of the following definitions is correct for a solid?
matter that has a fixed figure and a fixed shape
matter that has a fixed volume and a fixed mass
matter that has a fixed volume and a fixed shape
matter that has a fixed gravity and a fixed shape
Which state of matter has the strongest bonds?
solid
liquid
gas
plasma
The atomic number is
the number of protons plus the number of neutrons in an atom.
the number of protons plus the number of electrons in an atom.
the number of protons in an atom.
the number of neutrons in an atom.
The mass number is
the number of protons plus the number of neutrons in an atom.
the number of protons plus the number of electrons in an atom.
the number of protons in an atom.
the number of neutrons in an atom.
When an atom gains or loses an electron, it becomes a(n)
molecule.
isotope.
ion.
quark.
Atoms with the same number of protons but different number of neutrons are
molecules.
isotopes.
ions.
quarks.
The largest particle in an atom is a(n)
proton
electron
neutron
At atoms is mostly made of empty space.
True
False
Elements in the same column of the periodic table have the same number of ______________.
neutrons
atoms
valence electrons
protons
Which group contains the most reactive metals?
alkali metals
transition metals
post-transition metals
noble gas metals
Noble Gases are the least reactive elements.
True
False
Any element with an atomic number above 92 is man-made and only has radioactive isotopes.
True
False
Electrons in the outer energy level of an atom are called valence electrons.
True
False
What is a covalent bond?
When electrons are shared but shared unequally.
Two atoms share one or more pairs of outer-shell electrons.
When electrons are shared in a sea of electrons among atoms.
When two atoms bond when one or more electrons are given to one atom by another atom.
Which is the correct general equation for a double replacement reaction?
A + B → AB
A + BC → B + AC
AB + CD → AD + CB
AB → A + B
Which is the correct general equation for a synthesis reaction?
A + B → AB
A + BC → B + AC
AB + CD → AD + CB
AB → A + B
Which is the correct general equation for a decomposition reaction?
A + B → AB
A + BC → B + AC
AB + CD → AD + CB
AB → A + B
Which is the correct general equation for a single replacement reaction?
A + B → AB
A + BC → B + AC
AB + CD → AD + CB
AB → A + B
An endothermic reaction takes less energy to break bonds in the reactants than is released when new bonds form in the product.
True
False
Combustion reactions absorb energy.
True
False
How many atoms are in one molecule of glucose? The chemical formula for glucose is C6H12O6.
12
24
6
18
How does a catalyst affect the reaction rate?
It speeds it up.
It slows it down.
It does not affect the rate.
Activation energy is the energy required to keep a chemical reaction going.
True
False
The reaction rate can be sped up by:
Decreasing the temperature
Increasing the surface area of the reactants
Decreasing the concentration of the reactants
Removing a catalyst
The dissolving rate can be sped up by:
Decreasing the temperature
Increasing the temperature
Keeping the substances as still as possible
Decreasing the surface area of the solute
Some substances are insoluble in water.
True
False
Compounds called indicators change color when acids come into contact with them.
True
False
The strength of acids and bases is measure by the ______.
pH scale
concentration scale
neutral ion scale
aB scale
The daughter product of beta decay has _______.
the same chemical symbol as the original.
the same atomic number as the original.
the same mass number as the original.
a mass number 4 less than the original.
The daughter product of alpha decay has _______.
the same chemical symbol as the original.
the same atomic number as the original.
the same mass number as the original.
a mass number 4 less than the original.
The daughter product of gamma decay has _______.
the same chemical symbol as the original.
an atomic number 4 less than the original.
a mass number 2 less than the original.
a mass number 4 less than the original.
Is sunlight a renewable source of energy?
Yes, it's renewable
No, it's non-renewable
Is nuclear power a renewable source of energy?
Yes, it's renewable
No, it's non-renewable
The kinetic energy that comes from moving electrons is called ___________________.
Mechanical energy
Chemical energy
Electrical energy
Thermal energy
The energy stored in the bonds between atoms that make up compounds is called ___________________.
Mechanical energy
Chemical energy
Electrical energy
Thermal energy
The energy of an object that is moving or has the potential to move is called ___________________.
Mechanical energy
Chemical energy
Electrical energy
Thermal energy
The total kinetic energy that of all the atoms that make up an object is called ___________________.
Mechanical energy
Chemical energy
Electrical energy
Thermal energy
The unit used to measure energy is called ___________________.
the joule
a mechanical Newton
pke (potential kinetic energy)
Sound energy happens when vibrations pass through air particles in a wave.
True
False
Energy conversion is when one form of energy changes to another form.
True
False
An energy transfer is when one form of energy changes to another form.
True
False
What factors contribute to an object's gravitational potential energy?
It's weight and shape.
It's position and chemical bonds.
It's position and weight.
It's shape and chemical bonds..
What factors contribute to an object's gravitational potential energy?
It's weight and shape.
It's position and chemical bonds.
It's position and weight.
It's shape and chemical bonds..
Conservation means saving resources by using them more efficiently or not using them at all.
True
False
Renewable resources are natural resources that are in limited supply and cannot be replaced except over many years.
True
False
The transfer of thermal energy between objects that have different temperatures is ___________.
temperature
heat
kinetic energy
electrical energy
Convection is ______.
the transfer of thermal energy in matter between particles.
when currents move energy through fluids.
transfer of energy by waves that traveling through empty space.
the measure of the average kinetic energy in a substance.
Conduction is ______.
the transfer of thermal energy in matter between particles.
when currents move energy through fluids.
transfer of energy by waves that traveling through empty space.
the measure of the average kinetic energy in a substance.
Radiation is ______.
the transfer of thermal energy in matter between particles.
when currents move energy through fluids.
transfer of energy by waves that traveling through empty space.
the measure of the average kinetic energy in a substance.
Specific heat is ________.
the amount of energy needed to raise the temperature of 1 gram of a substance by 1∘ C.
poor thermal conductors that take heat away from specific objects.
the transfer of thermal energy between objects that have different temperatures.
the amount of energy needed to raise the temperature of 1 gram of a substance by 1∘ F.
A way of transferring energy that doesn’t require matter.
conduction
convection
radiation
insulation
Most motor vehicles use __________.
an internal combustion engine
an external combustion engine
a refrigerant engine
a forced air engine
