Unit 2: Experimental Techniques Flashcards

1
Q

Time

A

Stopwatch

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2
Q

Temperature

A

Celsius theromometer

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3
Q

Volume

A

Measuring Cylinder

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4
Q

Mass

A

Electronic Balance

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5
Q

Titrations

A

Burette

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6
Q

Mobile phase

A

when the substances separate according to their solubility

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7
Q

stationary phase

A

The substance that is the most soluble travels fastest and farthest up the paper

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8
Q

Rf = Retention Factor

A

distance solute is traveled over distance solvent traveled

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9
Q

List two characteristics of a pure substance

A
  • a pure substance contains only one substance

* a pure substance melts and boils at a definite and predictable temperature

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10
Q

The presence of an impurity in a substance can… (two points)

A

1) lowers the melting point

2) raises the boiling point

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