WorksheetsMatter and Chemical Change Unit Review
Total questions: 115
Worksheet time: 1hrs 14mins
Describe the movement of molecules as a substance changes from gas to liquid.
The speed of the decreases because they have higher kinetic energy in the liquid state.
The speed of the molecules increases because they have higher kinetic energy in the liquid state.
The speed of the molecules decreases because they have lower kinetic energy in the liquid state.
The speed of the molecules increases because they have lower kinetic energy in the liquid state.
Elements in this category have similar chemical properties. Select two answers.
families
periods
groups
transition
Horizontal rows on the periodic table are called _____.
transition
groups
periods
families
Vertical columns on the periodic table are called _____. Select two answers.
transition
groups
periods
families
Use your periodic table to determine which element contains 11 protons and 10 electrons.
a neutral sodium ion
an ion of sodium
a neutral neon ion
an ion of neon
Use your periodic table to determine which element contains 20 protons and 19 electrons.
a neutral potassium ion
an ion of potassium
an ion of calcium
a neutral calcium ion
Use your periodic table to determine which element contains 12 protons and 11 electrons.
a neutral magnesium ion
an ion of magnesium
an ion of sodium
a neutral sodium ion
Which two subatomic particles determine an atom's mass? Select two answers.
protons
electrons
neutrons
atomic number
Which subatomic particle determines the identity of an atom?
protons
electrons
neutrons
mass number
Which two subatomic particles can be found in an atom's nucleus? Select two answers.
protons
electrons
neutrons
mass number
Why is the charge of a neutral atom equal to zero?
The number of protons equal the number of neutrons.
The number of protons is greater than the number of neutrons.
The number of protons is greater than the number of electrons.
The number of protons is equal to the number of electrons.
How many electrons are there in a neutral atom of magnesium?
2 electrons
12 electrons
13 electrons
24 electrons
How many electrons are there in a neutral atom of silicon?
4 electrons
14 electrons
15 electrons
28 electrons
Use your periodic table to determine how many protons, electrons, and neutrons there are in a neutral atom of an element that has an atomic number of 16 and a mass number of 36?
36 protons, 36 electrons, and 16 neutrons
20 protons, 20 electrons, and 16 neutrons
16 protons, 16 electrons, and 36 neutrons
16 protons, 16 electrons, and 20 neutrons
Which statement best explains why noble gases (group 18) are inert (unreactive)?
They can have either a positive or a negative charge.
Their outermost energy level is missing one electron.
Their outermost energy level is full.
They tend to give up all of their valence electrons easily.
What element is represented by this image?
carbon
phosphorus
silicon
sulfur
What is the kind of bond between a metal and a nonmetal called?
Ionic
Covalent
Lattice
Metallic
molecular compounds have....
Nonmetals that share electrons
Metals that transfer electrons
Nonmetal and a Metal that share electrons
Metal and a Nonmetal that transfers electrons
Ionic bond forms between....
Nonmetals that share electrons
Metals that transfer electrons
Nonmetal and a Metal that share electrons
Metal and a Nonmetal that transfers electrons
How many nitrogen atoms and oxygen atoms are there in dinitrogen tetroxide?
two nitrogen atoms and three oxygen atoms
one nitrogen atom and two oxygen atoms
three nitrogen atoms and one oxygen atom
two nitrogen atom and four oxygen atoms
How many carbon atoms and chlorine atoms are there in carbon tetrachloride?
one carbon atom and one chlorine atoms
no carbon atoms and four chlorine atoms
one carbon atom and four chlorine atoms
four carbon atoms and one chlorine atom
What is the chemical formula when magnesium and nitrogen form a compound?
MgN
Mg2N3
Mg3N2
none of these
What is the chemical formula for the ionic compound formed between aluminum and sulfur atoms?
AlS
Al2S3
Al3S2
cannot be determined
What is the chemical formula for the ionic compound formed between potassium and oxygen atoms?
KO
K2O
KO2
none of these
What type of change occurs when you grind (crush) a piece of chalk into powder?
Chemical change. A new substance was formed.
Physical change. A new substance was NOT formed.
Chemical change. A new substance was NOT formed.
Physical change. A new substance was formed.
Why are alkali metals extremely reactive?
They only need to lose one valence electron.
They only need to lose two valence electrons.
They are metals at room temperature.
They have small atomic masses.
What type of change occurs when ice melts to water and then evaporates as gas?
Chemical change. A new substance was formed.
Physical change. A new substance was NOT formed.
Chemical change. A new substance was NOT formed.
Physical change. A new substance was formed.
Which law best describes the mass of a tree and oxygen equal to the total mass of the remaining ash and gases of the tree after it is burned down to ashes?
The Law of Equal Masses
The Law of Conservation of Mass
The Law of Matter
The Law of Equal Atoms
Which one indicates that a chemical reaction has NOT occurred when you combine two different elements?
A new substance had formed.
Bubbling had occurred.
There was some flammability.
The substance dissolved.
In a chemical equation the mass of the reactants is
more than the mass of the products
less than the mass of the products
equal to the mass of the products
twice the amount than the mass of the products
Coal contains carbon and other elements. Carbon dioxide forms when coal burns in the presence of oxygen. Which of these is the best evidence that a chemical reaction occurs when coal burns? (select two)
The shape of the coal changes
Oxygen is present
A new substance is produced
The product has different chemical properties than the reactant
Which of the following is an example of a formation reaction?
What happens with the water molecules after it goes through a decomposition process?
The water molecule separates into oxygen atoms and hydrogen atoms.
The hydrogen atoms and oxygen atoms combine to form one molecule.
The water molecules evaporate.
The atoms are destroyed after the reaction.
How can you speed up the rate at which a sugar cube dissolves in water?
Do not stir the sugar in the water.
Place a large sugar cube in the water.
Heat the water.
Remove the ions.
The wick of a candle is burning as the wax of the candle melts, drips down the side of the candle, and hardens at the base of the candle. Describe the physical and chemical changes that are occurring during this process. (Select two answers)
Physical change is occurring as the melted wax solidifies at the base of the candle.
Physical change is occurring when the wick is burning.
Chemical change is occurring as the melted wax solidifies at the base of the candle.
Chemical change is occurring when the wick is burning.
Kearstin and Alyah found four different bottles filled with unknown pure liquids. They measure the properties of each liquid. The measurements are displayed in the data table below. They wonder if any of the liquids are the same substance.
Liquids 1 and 2 are the same substance because both have the same color and the same volume.
Liquids 2 and 3 are the same substance because both have the same density and the same boiling point.
It is difficult to determine which two substances are the same. The data table is difficult to read.
None of the substances are the same. All of the liquids are different from each other.
These are the data and results collected of several elements that were tested in a lab. Identify the identity of an unknown element that conducts electricity and reacts with nonmetals. Which element from the data table is most likely the unknown element? Support your claim and reasoning to justify your answer.
Element 1. It conducts electricity and is very reactive.
Element 2. It conducts electricity and reacts with nonmetals.
Element 3. It does not conduct electricity and is unreactive.
Element 4. It does not conduct electricity and reacts with alkali metals.
Which state of matter matches with its description?
Solid - no fixed shape (cannot measure its shape); no fixed volume (cannot measure its volume).
Liquid - no fixed shape (take the shape of its container); definite (fixed) volume.
Gas- definite shape (has its own shape); definite (fixed) volume.
Plasma- has definite shape (has its own shape); no fixed volume (cannot measure its volume).
A teacher challenged a group of students to identify an unknown white solid. The students recorded the following results in their investigation. Which of the tests listed above provides evidence of a chemical property of the unknown solid?
A
B
C
D
A type of reaction that produces a change like the one shown in the graph above is
corrosion
exothermic
combustion
endothermic
In an experiment, 12.0 g of solid carbon, C(s), reacted with oxygen gas, O2(g), to form 44.0 g of carbon dioxide gas, CO2(g).
If all 12.0 g of carbon reacted, how many grams of oxygen reacted with the carbon?
12 g
32 g
44 g
56 g
Copper has been used to produce metal coins because it is
• non-reactive with most acids
• not readily reactive with oxygen • malleable
Which of the elements on the periodic table above would be another appropriate metal to use for producing metal coins based on its similar properties to copper?
iron
silver
mercury
potassium
Which group of elements on the periodic table has the least reactive elements?
Group 1
Group 2
Group 17
Group 18
Which of the following rows identifies the three elements present in washing soda, Na2CO3(s)?
A
B
C
D
Which of the following diagrams best represents molecules of water?
Which pair of compounds below can be classified as ionic compounds?
C6H6(l) and BeF2(s)
C6H6(l) and NO2(g)
LiCl(s) and BeF2(s)
LiCl(s) and NO2(g)
In a science class, students saw a copper precipitate, Cu(s), appear in a solution of copper(II) sulfate, CuSO4(aq), after a piece of zinc, Zn(s), was added to the solution.
Which of the following chemical equations represents the reaction described above?
CuSO4(aq) + ZnSO4(aq) → Cu(s) + Zn(s)
Cu(s) + ZnSO4(aq) → Zn(s) + CuSO4(aq)
Zn(s) + ZnSO4(aq) → Cu(s) + CuSO4(aq)
Zn(s) + CuSO4(aq) → Cu(s) + ZnSO4(aq)
Which of the following actions best describes how to safely deal with a material with the above WHMIS symbol after working with it?
Place it in a biohazardous-waste bin for collection.
Dilute it with water before pouring it down the drain.
Combine it with a sand–gravel mixture before disposing of it.
Place it in a lead-lined container for radioactive-waste collection.
Which is an example of a physical property?
state
colour
luster
all of the above
Which of the following is NOT one of the 4 statements that make up Dalton's Atomic Theory?
All matter is made up of small particles called atoms
Atoms cannot be created or destroyed by ordinary means
Atoms combine with other atoms to form larger particles called molecules
The electrons orbit the nucleus in energy levels
Adding hydrochloric acid (HCl) to a chrome metal to produce hydrogen gas is an example of what type of change?
When ice is formed
When dew forms on grass
When dry ice forms
When water is lifted from the puddles into the clouds
Anything that has mass and takes up space
matter
mixture
element
pure substance
SELECT ALL THAT APPLY
Which of the following are pure substances?
element
compound
homogeneous mixture
heterogeneous mixture
Type of matter with a fixed composition that cannot be separated by physical means
heterogeneous mixture
homogeneous mixture
mixture
pure substance
Made up of atoms with the same identity
element
compound
homogeneous mixture
heterogeneous mixture
SELECT ALL THAT APPLY.
Which of the following are elements?
carbon
carbon dioxide
pure water
helium
SELECT ALL THAT APPLY.
Which of the following are compounds?
carbon
carbon dioxide
pure water
helium
A mixture in which the composition is NOT uniform and the different materials can be easily distinguished
homogeneous mixture
heterogeneous mixture
A mixture in which the composition looks uniform, but it is actually two or more substances that are uniformly spread out
homogeneous mixture
heterogeneous mixture
SELECT ALL THAT APPLY
Examples of homogeneous mixtures
Diet Coke
Trail mix
Kool-aid
Fruit salad
SELECT ALL THAT APPLY
Examples of heterogeneous mixtures
Diet Coke
Trail mix
Pure water
Fruit salad
Made of two or more substances that can be separated by physical means
matter
mixture
element
pure substance
Mixture of particles so small that they cannot be seen and will never settle to the bottom of the container
solution
suspension
colloid
Gatorade is an example of a
solution
suspension
colloid
Mixture with particles that are larger but still too light to settle out; usually cloudy
solution
suspension
colloid
Shaving cream is an example of a
solution
suspension
colloid
Mixture containing a liquid in which visible particles settle
solution
suspension
colloid
Oil and water is an example of a
solution
suspension
colloid
You are about to open a bottle of salad dressing and notice that there are instructions to "shake well before serving". The salad dressing is most likely a
solution
pure substance
colloid
suspension
Which of the following is malleable?
styrofoam
glass
water
aluminum
A material that is ductile and conducts electricity is most likely a
type of metal
type of wood
water
SELECT ALL THAT APPLY
Which are physical properties?
color
melting point
flammability
malleability
corrosion
SELECT ALL THAT APPLY
Which are chemical properties?
color
melting point
flammability
malleability
corrosion
Change in the form of the substance but does not change the composition of the substance
physical change
chemical change
Produces matter with a different composition than the original sample
physical change
chemical change
Boiling water is an example of a
physical change
chemical change
A popsicle melting is an example of a
physical change
chemical change
Crushing graham crackers to make cheesecake crust is an example of a
physical change
chemical change
SELECT ALL THAT APPLY
Signs that a chemical change has occurred are
formation of a gas
color change
change in shape (cut into pieces)
heat or light is given off
melting
Gas forming when vinegar and baking soda are mixed is an example of
physical change
chemical change
Fireworks exploding are an example of
physical change
chemical change
Your car rusting is an example of
physical change
chemical change
Adding food coloring to frosting is an example of
physical change
chemical change
Particles are close together but still have enough energy to move past each other freely
solid
liquid
gas
plasma
Have a definite volume but take the shape of the container
solid
liquid
gas
plasma
Particles are closely packed together and cannot move freely
solid
liquid
gas
plasma
Have a definite volume and a definite shape
solid
liquid
gas
plasma
Particles are not close together and can move anywhere in the container
solid
liquid
gas
SELECT ALL THAT APPLY
Have no definite volume and no definite shape
solid
liquid
gas
Substance changes from solid to liquid
melting
freezing
condensation
sublimation
Substance changes from liquid to a solid
melting
freezing
condensation
sublimation
Substance changes from a gas to a liquid
vaporization
deposition
condensation
sublimation
Substance changes from a liquid to a gas
vaporization
deposition
condensation
sublimation
Substance changes from a solid to a gas
vaporization
deposition
condensation
sublimation
Which state of matter is pictured?
solid
liquid
gas
plasma
Bose-Einstein Condensate
Which state of matter is pictured?
solid
liquid
gas
plasma
Bose-Einstein Condensate
Which state of matter is pictured?
solid
liquid
gas
plasma
Bose-Einstein Condensate
Which state of matter has the MOST kinetic energy?
solid
liquid
gas
Which state of matter has the LEAST kinetic energy?
solid
liquid
gas
What phase change is happening in the picture?
melting
freezing
vaporization
condensation
What phase change occurs when dry ice gets smaller?
sublimation
deposition
vaporization
melting
What phase change must take place in order to dry clothes on a clothesline?
melting
freezing
vaporization
condensation
