Unit 2: Properties of materials Flashcards

1
Q

What is a solution?

A

A solution is a mixture of solute and solvent.

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2
Q

What is a solvent?

A

A solvent is a liquid in which other substances (solute) will dissolve and most of the time in liquid form.

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3
Q

What is a solute?

A

A solute is a substance that is dissolved and most of the time in solid form.

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4
Q

What is a soluble?

A

A soluble is a substance that will dissolve.

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5
Q

What is an insoluble substance?

A

An insoluble substance is a substance that will not dissolve.

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6
Q

What is solubility?

A

Solubility is how soluble a substance is.

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7
Q

Is solution transparent?

A

Yes.

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8
Q

What added together becomes a solution?

A

Solute + solvent -> solution.

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9
Q

How many substances does dissolving need?

A

Two.

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10
Q

How many substance does melting need?

A

One.

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11
Q

What is saturated solution?

A

The max amount of solute dissolved in a solvent.

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12
Q

What is a dependent variable?

A

A dependent variable (y-axis) is the factor that changes in an investigation as a result of changing the independent variable.

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13
Q

What is an independent variable?

A

An independent variable (x-axis) is the factor that is changed by the experimenter in an investigation.

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14
Q

What are control variables?

A

Control variables are factors that are kept the same in an investigation so that the test is fair.

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15
Q

What is paper chromatography used for?

A

A method of separation.

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16
Q

How many spots can pure substances produce?

A

One spot.

17
Q

What happens to more soluble substances and less soluble substances in the paper chromatography?

A

More soluble substances travel further away from the baseline than less soluble substances.

18
Q

How many spots can impure substances or mixtures produce?

A

Multiple spots.

19
Q

What are two solvents that can be used to carry out paper chromatography?

A

Water and acetone.

20
Q

What is illegal substance?

A

Illegal substance (one spot only) is when there aren’t permitted ingredients of the substance.

21
Q

What will be absorbed by the filter paper?

A

Solvent.