WorksheetsPhysical Science Final Exam
Total questions: 93
Worksheet time: 1hrs 19mins
The variable that is kept the same in an experiment
Control
Dependent
Independent
Deposition is the phase change in which a gas turns straight into a ____________ without first turning into a liquid.
liquid
gas
solid
What phase change is occurring when substances like dry ice turn straight from a solid to a gas?
sublimation
deposition
evaporation
freezing
What phase change takes place when a liquid turns into a gas?
melting
sublimation
condensation
evaporation
What phase change takes place when a liquid turns into a solid?
melting
freezing
deposition
condensation
Walking outside on a hot day and having your solid popsicle turn into a liquid is an example of ______________ .
deposition
evaporation
freezing
melting
Which of the following phase changes is a result of removing heat energy?
melting
evaporation
freezing
sublimation
When the temperature of matter increases, the particles...
speed up and move closer
speed up and move farther apart
slow down and move closer together
slow down and move farther apart
When the temperature of matter decreases, the particles...
speed up and move farther apart
speed up and move closer together
slow down and move farther apart
slow down and move closer together
All changes in the state of matter of a substance requires...
vibration
water
permission
energy
Matter is _______________________________.
The amount of matter in an object.
The amount of space an object occupies.
Anything that has mass and volume.
Mass is ________________________________.
The amount of matter in an object.
Anything that has Mass and volume.
The amount of space an object occupies.
Volume is _______________________.
the amount of matter an object has.
the amount of space an object occupies.
anything that mass and volume.
In which phase of matter are the particles the most dense?
Solid
Liquid
Gas
In what phase of matter are the molecules the least dense?
Solid
Liquid
Gas
The upward force exerted by a fluid is called the...
buoyancy force
density force
fluidity force
normal force
flammability of a substance
physical change
physical property
chemical change
chemical property
inflating a tire
physical change
physical property
chemical change
chemical property
freezing point
physical change
physical property
chemical change
chemical property
formation of water when hydrogen burns
physical change
physical property
chemical change
chemical property
a characteristic that indicates whether a substance can change to another substance
physical change
physical property
chemical change
chemical property
Acids contain which type of ions?
Hydrogen
Hydroxide
Oxygen
Acids and Bases are which phase of matter?
Solid
Liquid
Gas
Bases contain which type of ions?
Hydrogen
Hydroxide
Nitrogen
Carbon
What does the pH scale measure?
The strength of a substance
The acidity of a substance
How basic a substance is
What do acids and bases have in common?
Substances at each end of the pH scale are dangerous (strong)
Substances at ech end of the pH scale are very reactive
They are both neutral
They both contains high levels of hydrogen
Which of the following characteristics are true about acids?
Taste sour
Taste bitter
Turn cabbage juice pink
Are found in our digestive system
Which of the following is true about bases?
Ex: Ammonia
Are buffers
Contain hydroxide ions
Taste bitter
Which key term means to add water?
Saturate
Concentrate
Dilute
What is a substance that helps to determine if a liquid is an acid or a base?
Solvent
Solute
Indicator
Neutralizer
If we wanted to lower the pH in our test tube lab, what could we have added to the test tubes?
An acid
A base
A neutral
What is true about the particles in a fluid?
They can move freely
They are not very attracted to each other
They are strongly attracted to each other
There is a lot of resistance between them
What happens to the molecules in Pascal's Principle?
Pressure is transferred throughout the fluid
As molecules gain energy, they pass that energy along to other molecules
Heavy objects sink
Water molecules are displaced
Which of the following are true about viscosity?
It is the resistance of a liquid to flow
The force of gravity is greater than the buoyant force
As velocity increases, pressure decreases
Molecules pull on other molecules
Fluids that are highly viscous:
Are strongly attracted to each other
Are NOT strongly attracted to each other
How does temperature affect viscosity?
Higher temp= higher viscosity
Higher temp= lower viscosity
Lower temp= lower viscosity
Lower temp= higher viscosity
Which of the following are true about viscosity?
It is the resistance of a liquid to flow
Molecules pull on other molecules
As velocity increases, pressure decreases
The force of gravity is greater than the buoyant force
What factors affect buoyancy?
Mass
Density
Gravity
What is buoyancy?
The force that is pushing down on an object
The force of water that is pushing up on an object
The same as density
In positive buoyancy, which force is greater:
Gravity
Buoyancy
The forces are equal
In negative buoyancy, which force is greater:
Gravity
Buoyancy
They are equal
What is the principle that states that a fluid can move against gravity?
Cohesion
Pascal
Bernoulli
Capillary Action
An air plane wing has lift because..
The air on top will stretch out and pressure is reduced
The air on top will move with greater velocity
The air on the bottom will speed up
The air on the bottom will push up in the middle
In the marshmallow in a syringe experiment, as we increased the pressure, the volume
Increased
Decreased
Stayed the same
In the floating candle experiment, as the temperature of the inside of the beaker increased, the volume of water also increased. What type of relationship is this?
Direct
Inverse
How is mass different than weight?
Weight is affected by gravity
Mass changes based on location
Mass is always the same
What is a concentrated substance?
A substance that is an acid
A substance that does not completely dissolve
A substance that contains a lot of chemical
A substance that contains a lot of water
If a substance does not dissolve in a solvent (water or alcohol) it is:
Soluble
Insoluble
Partially Soluble
If a substance dissolves completely in a solvent (water or alcohol) it is:
Soluble
Partially Soluble
Insoluble
How do I know if a substance is a good solvent (a good dissolver)?
The solutes will be mostly insoluble
The solutes will be mostly partially soluble
The solutes will be mostly soluble
Which of the following are true about the Kinetic Molecular Theory?
Matter is made of particles
Particles are moving
The phase of matter determines how fast the particles move
Particles are mostly still
Which of the following are true about phase changes?
They are reversible
They are physical changes
They are chemical changes
A substance retains its identity
How do we determine phase changes?
By looking at the heat that is released
By measuring the temperature
By observing the chemical structure
What is the base unit for length in the metric system?
kilometers
meters
centimeters
millimeters
Which of the following are American measurements?
Inches
Grams
Ounces
Liters
What is heat?
The movement of particles
A change in temperature
When an object has reached thermal equilibrium
What is it called when heat flows until 2 objects have reached the same temperature?
Homeostasis
Thermal Equilibrium
Thermal Expansion
What is it called when heat is transferred by direct contact (ex: the objects are touching)?
Conduction
Convection
Radiation
What is it called when warm air rises and then cools and sinks?
Convection
Conduction
Radiation
What is it called when an object gives off heat (you can feel the heat without directly touching the object)?
Conduction
Convection
Radiation
Which of the following are true regarding the law of conservation of mass?
Atoms are not created or destroyed
Atoms are rearranged
Atoms are continuously being created
Atoms are lost as energy is created
Which of the following are evidence of chemical reactions?
Heat
Light
Production of a gas
Luster
What is the difference between a chemical change and a chemical reaction?
There is no difference
A chemical change describes characteristics, a chemical reaction changes appearance
A chemical change creates new substances
A chemical change does not alter a substances chemical composition
What units are used for the volume of a liquid?
mL
g
m3
a collection of atoms of one type that cannot be broken down into simpler substances by ordinary chemical or physical means
element
subatomic particle
electron
matter
the positively charged subatomic particle contained in the nucleus of an atom
proton
neutron
electron
matter
a subatomic particle, contained in the nucleus of an atom, having the same mass as a proton but no electrical charge
proton
neutron
electron
matter
a negatively charged subatomic particle that orbits the nucleus of an atom
proton
neutron
electron
matter
a unique number for each element that equals the number of protons in an atom of that element
element name
element symbol
atomic number
atomic mass
the mass of an atom, calculated by adding the number of protons and neutrons in the nucleus of the atom
element name
element symbol
atomic number
atomic mass
a grouping of elements based on similar properties, arranged by columns in the periodic table; also known as a group
family
period
row
isotope
a row on the Periodic Table of Elements
family
period
row
isotope
H2SO4
2Li + Cl2 -> LiCl
H2 + O2 -> H2O
__Ag2O →__ Ag +___O2
