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WorksheetsMatter and Change Test Review
Total questions: 27
Worksheet time: 2hrs 15mins
Name
Class
Date
1.
A sheet of paper is torn into several small pieces. Which type of change has happened to the paper?
a)
Physical change only
b)
Chemical change only
c)
Physical change and chemical change
d)
A change in appearance that is neither a physical nor chemical change
2.
A chemist mixes liquid Substance X and solid Substance Y in a beaker, then stirs the mixture vigorously. Which observation or measurement would provide the strongest evidence that the two substances have undergone a physical change, but not a chemical change?
a)
Bubbles appear and rise throughout the mixture.
b)
The mixture produces a new solid substance that has a different color than Substance Y.
c)
The mixture can be separated into two substances, one with the same melting point as Substance X and the other with the same melting point as Substance Y.
d)
The mixture changes into a single substance that has a melting point between the melting points of Substances X and Y.
3.
A science student wants to use distillation to separate a mixture of two substances in the liquid state. For the student to be successful, which property should be significantly different between the two liquids?
a)
Freezing point
b)
Boiling point
c)
Ability to react with oxygen
d)
Ability to dissolve a solid substance, such as table sugar
4.
To model a liquid, a student places marbles in a sealed, transparent box. Each marble represents a particle of the liquid, and the box represents the container. Which action of the student would most improve the model?
a)
Shake the box vigorously so that the marbles move randomly throughout the box.
b)
Shake the box gently so that the marbles move past one another, but remain at the bottom of the box.
c)
Each of these actions would be an equal improvement.
5.
A student is measuring the properties of a sample of ethanol. Which is an extensive property of the sample?
a)
Mass
b)
Color
c)
Temperature
d)
Boiling point
6.
A student has clear, colorless liquids in two different beakers. What investigation could the student perform to determine which beaker contains water and which beaker contains a mixture of sugar and water?
a)
Measure the mass of both beakers to determine that the mixture is in the beaker with greater mass.
b)
Stir the contents of both beakers and observe carefully to see which beaker contains particles of sugar.
c)
Expose both beakers to a burner flame and observe the combustion of sugar in the beaker containing the mixture.
d)
Heat the liquids so that the water evaporates and observe precipitation of sugar in the beaker containing the mixture.
7.
Why do all samples of a given substance have the same intensive properties?
a)
All the samples have the same mass or volume.
b)
All the samples have the same chemical composition.
c)
All the samples have the same temperature.
d)
All of the above
8.
What are the three main states of matter?
a)
Atomic, molecular, ionic
b)
Mixture, solution, pure substance
c)
Solid, gel, powder
d)
Solid, liquid, gas
9.
In which two groups are mixtures classified?
a)
Heterogeneous and homogeneous
b)
Solid and liquid
c)
Elements and compounds
10.
A few spoonfuls of sugar crystals are mixed thoroughly until dissolved into water. Classify this mixture.
a)
A heterogeneous mixture of a solid and a liquid
b)
A homogeneous mixture of a solid and a liquid
c)
A homogeneous mixture of solids
d)
A heterogeneous mixture of liquids
11.
Which mixture would best be separated by filtration?
a)
A mixture of two liquids, each with a different boiling point
b)
A solution of a solid and a liquid
c)
A mixture of solids, in which all parts are the same size
d)
A mixture of solids, in which the types of parts are different sizes
12.
Which set is an example of an element, a compound, and a mixture?
a)
Carbon (C), oxygen(O2), carbon dioxide(CO2)
b)
Pure water, river water, sea water
c)
Oxygen, Earth's atmosphere, orange juice
d)
Nitrogen, table sugar, cough syrup
13.
What is identified by the chemical formula C6H12?
a)
A mixture of two elements
b)
A compound made of two elements
c)
A compound made of six elements
d)
A compound made of 18 elements
14.
How are compounds different from elements?
a)
Compounds are pure substances, while elements are not pure substances.
b)
Compounds are not pure substances, while elements are pure substances.
c)
Compounds can be broken apart by chemical means into simpler substances, but elements cannot.
d)
Compounds can enter into chemical reactions with other substances, but elements cannot.
15.
How can you distinguish a pure substance from a mixture?
a)
A pure substance may be separated by physical means; a mixture may be separated only by chemical means.
b)
A pure substance has a fixed composition; a mixture has a composition that may vary.
c)
A pure substance has a composition that may vary; a mixture has a fixed composition.
d)
None of the above
16.
Which is the main difference between physical changes and chemical changes?
a)
A physical change forms one or more new substances but a chemical change does not.
b)
A chemical change forms one or more new substances but a physical change does not.
c)
Substances change state of matter only by undergoing physical changes, not chemical changes.
d)
None of the above
17.
When a chemical change is taking place, which change can often be observed?
a)
A change in color
b)
The formation of a precipitate or gas
c)
A transfer of energy
d)
All of the above
18.
Which of the following is a physical change?
a)
corrosion
b)
explosion
c)
evaporation
d)
rotting of food
19.
Which of the following is a heterogeneous mixture?
a)
air
b)
salt water
c)
steel
d)
soil
20.
Which of the following is a homogeneous mixture?
a)
salt water
b)
beef stew
c)
sand and water
d)
soil
21.
Which of the following involves a chemical change?
a)
mixing
b)
melting
c)
grinding
d)
decomposing
22.
Which of the following processes involves a change in physical properties?
a)
rusting
b)
fermenting
c)
boiling
d)
burning
23.
A chemical change occurs when a piece of wood
a)
splits.
b)
is painted.
c)
decays.
d)
is cut.
24.
Among solids, liquids, and gases, which are most compressible?
a)
Solids
b)
liquids
c)
gases
d)
all are equally compressible
25.
Which set of properties, intensive or extensive, are based on the size of a sample?
a)
intensive
b)
extensive
26.
Boiling point of water is what type of property?
a)
Intensive property
b)
Extensive property
27.
The mass of calcium choride is what type of property?
a)
Intensive property
b)
Extensive property
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