Exam 4: Collection of Crime-Scene Evidence

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Tempered glass is used in:

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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.

Sublimation is defined as a change of state from:

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

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The weight 264.45 grams can be correctly expressed as:

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

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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.

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

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

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

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

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

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Which physical state has volume but no specific shape?

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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.

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

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

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

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

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Which is a true statement about the fracturing of glass?

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