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WorksheetsNature of Matter
Total questions: 66
Worksheet time: 1hrs 6mins
The particles of gases are free to move.
True
False
In this state of matter, particles are tightly packed and cannot move.
gas
solid
liquid
The particles of solids ________________
vibrate about their fixed postions
are able to slide over each other
move about freely at high speeds and in random direction
do not move
The particles of liquids ________________
vibrate about their fixed postions
are able to slide over each other
move about freely at high speeds and in random direction
do not move
The particles of gases ________________
vibrate about their fixed postions
are able to slide over each other
move about freely at high speeds and in random direction
do not move
These particles are held together by very strong forces of attraction
Solid
Liquid
Gas
Plasma
What happens to particles of liquid when they are heated?
They slide over one another faster and move further apart
They slow down and compress
They stop moving
They slide over one another slower and move closer together
The diagram represent the arrangement of particles in ____________.
gas
liquid
solid
The diagram represent the arrangement of particles in ____________.
gas
liquid
solid
Why does solid has a fixed shape?
The particles are held by very strong forces of attraction. They can only vibrate about their fixed position. Hence, they have an orderly arrangement.
The particles are held by weak forces of attraction. They can move rapidly in all directions. Hence, they have an disorderly arrangement.
The particles are held by strong forces of attraction. They can slide over one another. Hence, they have an disorderly arrangement.
Matter has
mass
volume
atoms
all of the above
A ____ is the smallest particle of an element.
molecule
compound
atom
element
Examples of elements are (chose all that apply)
hydrogen (H)
sodium chloride (NaCl)
carbon (C)
water (H2O)
An element is a _______________
pure substance
mixture
comound
variety of atoms
Anything that takes of space and has mass.
matter
atoms
elements
compounds
These are 2 or more substances that are not chemically bonded together.
mixtures
compounds
elements
molecules
This is a chart that arranges all the known elements in order of increasing atomic number.
venn diagram
line graph
periodic table
circle graph
1. Melting crayons is an example of _____________.
physical change
physical property
chemical change
chemical property
While outside playing ball, Naisir slid on the ground and ripped a hole in his pants. Choose the statement that correctly identifies the type of change that occurred and the supporting evidence.
A chemical change happened because a new substance was created.
A chemical change happened because there was a permanent change to his pants.
A physical change happened because there is not a new substance being formed.
A physical change happened because he physically slid on the ground to cause the rip.
1. Which substance can be identified as a homogeneous mixture?
peanut butter sandwich
chocolate chip cookie
pepperoni pizza
chocolate milk
When a solid melts, what happens to the speed and arrangement of the molecules?
The particles speed up and are close together
The particles speed up and spread out
The particles slow down and are close together
The particles slow down and spread out
Which of the following examples represents a physical change?
Which of the following is evidence of a physical change?
new substance
shape change
light produced
gas released
A teacher is demonstrating physical and chemical changes to her class. Which action should they use to demonstrate a chemical change?
Cutting a piece of paper with scissors.
Folding a piece of paper into an airplane.
Ripping a piece of paper with their hands.
Burning a piece of paper with a match.
A physical change is
a change where the characteristics do not change the substance
a change where the characteristics do change the substance
a change where the chemistry changes
What is the definition of chemical change?
any change that results in the formation of one (or more) new chemical substance(s)
changing of only the appearance of the object
matter cannot be created or destroyed, only change form
changes affecting the form of a chemical substance, but not its chemical composition
Which example best illustrates a physical change?
iron rusting
charcoal burning
an ice cube melting
a marshmallow burning
A glass bottle that is shattered is a
Chemical Change
Physical Change
Baking soda and vinegar combining to make carbon dioxide is a
Chemical Change
Physical Change
Which of the following are examples of chemical changes? Select all that apply!
Iron Rusting
Gas Burning
Breaking a Glass
Boiling Water
Burning Wood
Sugar dissolving in water is a
Chemical Change
Physical Change
Identify the change shown in the picture.
Irreversible physical change
Irreversible chemical change
reversible physical change
reversible chemical change
To change from one state of matter to another state of matter is called?
phase change
potential change
kinetic change
thermal change
What is a mixture?
substances that are not chemically bonded and can be separated
substances that are chemically bonded and can be separated
substances that are not chemically bonded and can not be separated
substances that are chemically bonded and can not be separated
What is a chemical change?
Forming a new substance
When two or more substances combine to make a greater one
When two or more substances combine to make a new chemical substance
Combing substances
Which is an example of a physical change?
Cooking
Buring Wood
Ripping paper
Digesting Food
Does a physical change the substance itself?
yes
no
Which of the following isn't a chemical change?
digesting food
boiling water
fireworks
baking bread
Lucky Charms
Heterogeneous
Homogeneous
Freshly brewed black coffee
Heterogeneous
Homogeneous
Dirt
Heterogeneous
Homogeneous
M&Ms
Heterogeneous
Homogeneous
Homogeneous
Heterogeneous
homogeneous mixture
homogeneous mixture
Isla, Olivia, and Zoe are discussing the difference between elements and compounds. What is the main difference between them?
Elements contain only one kind of atom, while compounds contain two or more kinds of atoms
Elements are solids, while compounds are liquids
Elements cannot be broken down chemically, while compounds can
Elements have a definite shape, while compounds take the shape of their container
Extensive Property...
Depends on how much of the substance is present
Depends on the nature of the substance, not how much substance is present
depends on the external physical appearance of the object
Intensive Property...
Depends on how much of the substance is present
Depends on the nature of the substance, not how much substance is present
Depends on the internal contents of the substance
A __________________ is a characteristic of a pure substance that can be observed without changing it into another substance
physical property
chemical property
A ____________ is a characteristic of a pure substance that describes its ability to change into different substances
physical property
chemical property
A(n) __________ is a pure substance that cannot be broken down into other substances by chemical or physical means
element
atom
compound
mixture
Which of the following is a characteristic of a chemical change?
Change in shape
Formation of a new substance
Change in state
Change in size
What happens to the particles in a gas when it is cooled?
The particles speed up and spread out
The particles slow down and come closer together
The particles remain in the same state
The particles speed up and come closer together
Which of the following is an example of a homogeneous mixture?
Sand and water
Oil and water
Salt dissolved in water
Iron filings and sulfur
What does the law of conservation of mass state?
Mass can be created and destroyed.
Mass can be transformed into energy.
Mass is neither created nor destroyed in a chemical reaction.
Mass is always constant regardless of the reaction.
In a closed system, if 10 grams of reactants are used in a chemical reaction, how much mass of products should be expected according to the conservation of mass?
5 grams
10 grams
15 grams
20 grams
Which of the following scenarios best illustrates the conservation of mass?
Burning wood results in ash and smoke, with the total mass remaining the same.
Water evaporating into steam, losing mass in the process.
Ice melting into water, gaining mass.
Salt dissolving in water, with the mass of salt disappearing.
What does the law of definite proportions state?
Elements combine in any proportion to form compounds.
Elements combine in fixed, definite proportions to form compounds.
Elements do not combine to form compounds.
Elements combine in varying proportions to form compounds.
Which of the following is an example of the law of definite proportions?
Water always contains 8 grams of oxygen for every 1 gram of hydrogen.
Water can contain any amount of oxygen and hydrogen.
Water contains more hydrogen than oxygen.
Water contains more oxygen than hydrogen.
What is the mass in amu of H20?
18
17
5
34
