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The density of water at 60∘F is ________ the density of water at 28∘F.


A) the same as
B) less than
C) greater than

D) A) and B)
E) A) and C)

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Diagram and describe how to examine glass fractures to determine the direction of impact of a projectile.

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To examine glass fractures and determine...

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A piece of glass is immersed in a liquid. It proceeds to float on the liquid's surface. This shows that the density of the glass is ___________ the density of the liquid.


A) not comparable
B) equal to
C) less than
D) more than
E) none of the above

F) B) and C)
G) A) and E)

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Which is a true statement about the fracturing of glass?


A) Concentric fractures form first, starting on the side opposite the destructive force.
B) Concentric fractures form first, on the same side as the destructive force.
C) Radial cracks form afterward, starting on the same side as the destructive force.
D) Radial cracks and concentric fractures are formed simultaneously.
E) Radial cracks appear first, starting on the side opposite the destructive force.

F) A) and E)
G) A) and B)

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Contract the differences between a solid, a liquid and a gas.

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Solid, liquid, and gas are three states ...

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Which physical state has volume but no specific shape?


A) gas
B) liquid
C) solid
D) no such state exists
E) A and B

F) B) and E)
G) A) and B)

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Tempered glass is used in:


A) windshields in autos manufactured in the United States.
B) crystal stemware.
C) the side and rear windows of autos manufactured in the United States.
D) both B and C
E) none of the above

F) B) and C)
G) All of the above

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C

One milliliter of a liquid is ________ 1 cc of the same liquid.


A) greater than
B) less than
C) the same as

D) None of the above
E) All of the above

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The heat intensity (hotness) of water at 100∘C is ________ the heat intensity of water at 212∘F.


A) less than
B) the same as
C) greater than

D) A) and B)
E) A) and C)

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Explain the difference between elements and compounds. Cite one example of each.

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Elements are pure substances that cannot be broken down into simpler substances by chemical means. They are made up of only one type of atom. For example, oxygen is an element because it is made up of only oxygen atoms. Compounds, on the other hand, are substances made up of two or more elements that are chemically combined in a fixed ratio. Compounds can be broken down into simpler substances by chemical means. For example, water is a compound made up of two hydrogen atoms and one oxygen atom chemically bonded together.

A(n) ___________ property describes the behavior of a substance without reference to any other substance while a(n) ___________ property describes the behavior of a substance when it reacts or combines with another substance.


A) optical; birefringent
B) physical; biological
C) chemical; biological
D) optical; chemical
E) physical; chemical

F) A) and D)
G) B) and C)

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If an object is immersed in a liquid of greater density, it will:


A) float.
B) be suspended in the liquid.
C) sink.

D) B) and C)
E) A) and C)

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Define and explain the difference between the physical and chemical properties of matter.

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Physical properties of matter refer to c...

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Flotation is a method used by scientists to determine the ________ of a particle of glass.


A) refractive index
B) density
C) temperature
D) mass
E) weight

F) A) and C)
G) B) and D)

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Sublimation is defined as a change of state from:


A) solid to liquid.
B) liquid to gas.
C) liquid to solid.
D) solid to gas.
E) gas to liquid.

F) A) and D)
G) B) and D)

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D

The freezing point of water in Fahrenheit is ________ the freezing point of water Celsius.


A) greater than
B) the same as
C) less than

D) A) and B)
E) All of the above

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A hot-stage microscope and the GRIM 3 are used to determine the ________ of glass fragments.


A) weight
B) refractive index
C) relative density
D) metallic oxide content
E) temperature

F) A) and D)
G) A) and E)

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The use of the Celsius temperature scale by scientists is ________ their use of the Fahrenheit temperature scale.


A) greater than
B) less than
C) the same as

D) A) and B)
E) B) and C)

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In reference to the diagram above, what is the correct sequence of impacts?


A) A first
B) B first
C) A and B simultaneously
D) sequence impossible to determine
E) There are more than two impacts.

F) A) and E)
G) C) and D)

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The weight 264.45 grams can be correctly expressed as:


A) 26.445 centigrams.
B) .26445 kilograms.
C) 26,445 decigrams.
D) all of the above
E) none of the above

F) B) and E)
G) B) and D)

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