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WorksheetsUnit 3 Physical and Chemical Properties and Changes Review
Total questions: 102
Worksheet time: 2hrs 58mins
What are physical properties of matter?
Characteristics of matter that you can observe or measure without changing the identity of the matter
Traits of matter that always change the substance into a new material
Processes used to compare different kinds of chemical reactions
Descriptions of how matter is created from energy
Which definition best describes luster?
A gentle sheen or soft glow or shine
The ability to resist being scratched by another object
The feel or consistency of a surface or substance
The tendency to react with other substances
Which statement defines malleability?
The quality of being able to be shaped into something else without breaking
The resistance to being scratched by another object
The amount of mass contained in a given volume
The ability to conduct electricity
How would you describe the physical properties of the trophy shown? Select all correct descriptions.
Luster: shiny metallic
Color: gold or yellow
Texture: smooth
Texture: rough and gritty
Luster: dull and nonmetallic
What are size-dependent physical properties?
Measurements of these properties depend on how much matter is in the sample.
Measurements of these properties remain the same regardless of sample size.
These properties describe chemical reactivity with other substances.
These properties only apply to gases at room temperature.
What is mass?
A measure of the amount of matter that makes up an object.
The amount of space occupied by an object or substance.
A measure of the force of gravity acting on an object’s mass.
The temperature of a substance.
What is volume?
The amount of space occupied by an object or substance.
The amount of matter in an object.
The force of gravity acting on an object’s mass.
The density of a material.
What is weight?
A measure of the force of gravity acting on an object’s mass.
The amount of matter in an object.
The amount of space occupied by a substance.
The mass measured in kilograms irrespective of location.
What are size-independent physical properties? Measurements of these properties DO NOT depend on how much matter is in the sample; these properties are the same for small and large samples.
Properties that change when the sample size increases
Properties whose measurements are unaffected by the amount of matter in the sample
Properties that only apply to liquids
Properties that depend on the shape of the sample
The temperature at which a substance changes from a solid to a liquid or vice versa describes which property?
boiling point
density
melting and freezing point
viscosity
The temperature at which a substance changes from a liquid to a gas describes which property?
solubility
boiling point
conductivity
magnetism
The ability of one substance to dissolve into another describes which property?
magnetism
solubility
conductivity
density
The ability of matter to carry an electric current or thermal energy describes which property?
conductivity
viscosity
magnetism
boiling point
The motion of electric charge resulting in attractive and repulsive forces describes which property?
density
magnetism
solubility
melting point
The amount of mass per unit of volume of a substance describes which property?
viscosity
density
conductivity
freezing point
A liquid’s resistance to flow describes which property?
solubility
viscosity
magnetism
boiling point
What are chemical properties of matter?
Characteristics of matter that can be measured without changing it
Characteristics of matter that can only be observed as it changes to a different type of matter
Descriptions of how matter looks and feels
Numbers that compare the mass and volume of matter
What kind of process is a log burning?
Reversible process
Irreversible process
Partially reversible process
Temporary process
Why can you not tell from just looking at the log of wood whether it will burn?
Flammability is a chemical property that can only be observed during a change of matter
Flammability depends only on the log’s color and texture
Flammability can be determined from the log’s length alone
Flammability is a physical property that is visible without any change
Select all examples of chemical properties shown in the picture.
A reddish-brown flaky coating of iron oxide (rust) from reaction with oxygen
A dullness of color or loss of brightness (tarnish) from reaction with sulfur
A smooth, polished surface
What makes properties like rusting, tarnishing, flammability, and acidity chemical properties?
They describe how a substance can change its composition by reacting to form new substances
They depend only on the size and shape of the sample
They are observed without any change in the substance’s identity
They are based solely on color and texture
What is a physical change?
A change in form or appearance without forming a new substance; it can be considered reversible
A change that produces a new substance through a chemical reaction; it is irreversible
Any change that occurs only at very high temperatures
A change in mass caused by adding matter to a system
Which statement best defines a chemical change?
A change in a substance that produces one or more new substances with different properties and is considered irreversible
A change that only alters the shape of a substance and is easily reversed
A change where the properties remain the same and no new substances are formed
A change that involves temperature differences but does not create any new substances
Classify the following as Chemical Change or a Physical Change.
Chopping wood
Heating soup
Steam from a shower
Burning marshmellow
A bike rusting
baking soda and vinegar
Breaking chalk is a (a) change.
Rusting iron is a (b) change.
Subliming dry ice is a (c) change.
Water freezing into ice is a (a) change.
Match the following:
Physical Changes
A change that is reversed easily
Chemical Changes
changes that cause a substance to change into a new substance
Freezing, Grinding, Chopping, Tearing, Evaporating
Examples of Physical Changes
Spoiled, Rusting, Burning, Rust
Examples of Chemical Changes
Texture, hardness, luster, and sounds are all examples of a (a) change.
Baking a cake, cooking eggs, or burning food are all examples of (a)
Lighting a Match
Physical Change
Chemical Change
Rusting Nail
Physical Change
Chemical Change
Adding baking soda to vinegar
Physical Change
Chemical Change
The Statue of Liberty undergoing a color change indicates what?
Physical Change
Chemical Change
Formation of ice
physical change
chemical change
Why is melting ice is a physical change instead of a chemical change?
It does not smell bad.
It does not form a new substance
It changes from a solid to a liquid.
It changes quietly with no loud sound.
The law of Conservation of Mass states mass is always (a)
The property that doesn't change even if you are on the moon is (a)
Match the following
Mass
amount of matter
volume
amount of space taken up by matter
density
amount of mass in a given space
The Law of (a) of Mass states that matter (b) be (c) or destroyed. It can only (d) forms.
The Law of Conservation states (a)
The two objects shown are the same size. However, one object is made of wood, and the other object is made of plastic. Which of the following properties of the objects will be the same?
mass
texture
volume
weight
A jeweler melts silver to make jewelry. As the silver melts, the mass
stays the same
decreases
increased
is destroyed
A group of students weighed a jar of cream. Then they shook a jar of cream to make butter. Then, they weighed the jar again. Which best describes the mass/weight of the jar?
The jar will have kept the same weight because it did not gain or lose any matter.
The jar will have gained weight because some liquid changed to a solid.
The jar will have gained weight because shaking added energy to it.
The jar will have lost weight because of friction from shaking the liquid
Look at the chemical equation.
Is it written correctly to show the Law of Conservation of Mass?
Yes
No
6MgF2
This change is a
chemical reaction
physical change
musical change
all answers are correct
You know that a chemical reaction is occurring here because you see __________________ . (Pick 3)
purple color
smoke
ice formation
fire
a yellow precipitate
A precipitate is a ___________ that forms when 2 liquids react together.
solid
liquid
gas
plasma
2HgO → 2Hg + O2
the process by which one or more substances change to produce one or more different substances, defines ___________
conservation of mass
a chemical reaction
a chemical formula
a catalyst
Which one shows that a chemical reaction has occurred?
dissolving
melting
formation of a gas
bending
4Fe + 3O2 --> 2Fe2O3
Mg + __HCl ---> MgCl2 + H2
2Li + Cl2 -> LiCl
Identify the Reactants in this equation.
A
B
Which compound has 5 TOTAL ATOMS?
Oxygen (O2)
How many atoms of Hydrogen (H) are in C2H5OH?
2
6
7
10
How many Chlorine (Cl) are in 2NaCl?
1
2
4
How many atoms of Nitrogen (N) are in NH3?
1
3
4
2
How many atoms of Oxygen (O) are in CO2?
1
2
3
4
Which compound has 4 TOTAL ATOMS?
Water (H2O)
Ammonia (NH3)
Carbon dioxide (CO2)
How many Hydrogen are in 3H2O?
6
8
2
4
What are the products of the chemical reaction pictured?
CH4 and CO2
CH4 and O2
CO2 and 2H2O
O2 and H2O
How many reactants are in A + B ---> C ?
1
2
3
4
Is this equation balanced?
Yes
No
Is this equation balanced?
Yes
No
Is this equation balanced?
Yes
No
Determined whether the following equation is balanced or unbalanced. Ag + O2 ---> 2Ag2O
Balanced
Unbalanced
Determine whether the following equations is balanced or unbalanced. H4 + O2 ---> 2H2O
Balanced
Unbalanced
Determine whether the following equation is balanced or unbalanced. 4P +5O2 ---> 2P2O5
Balanced
Unbalanced
Determine whether the following equation is balanced or unbalanced. H2 + Br2 ---> 2HBr
Balanced
Unbalanced
Determine whether the following equation is balanced or unbalanced. 2Fe + 3Cl2 ---> FeCl3
Balanced
Unbalanced
Determine whether the following equations is balanced or unbalanced. S8 + O2 ---> 8SO3
Balanced
Unbalanced
Which of the following equations is balanced?
P4 + 3O2 ---> 2P2O3
N4 + 3F2 ---> 2NF3
2LiF + Br2 ---> 2LiBr + F4
How many of each type of atom are in Ca(OH)2?
(a) Ca
(b) O
2 (c)
(d) atoms total
How many of each type of atom are in Na2SO4?
(a) Na
(b) S
(c) O
(d) atoms total
Please drag the coefficients to the proper location for this equation will be balanced.
1
2
3
4
Which balanced equation represents a reaction that involves 6 atoms of Oxygen?
fireworks exploding (a)
Which of the following is an example of a physical change?
Baking a cake
Melting butter
Burning wood
Rusting iron
When sugar dissolves in water, what type of change occurs?
Chemical change
Physical change
Which property describes a substance's ability to be drawn into wires?
Malleability
Density
Viscosity
Ductility
