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CELL BIOLOGY & CHEM 402 > Elements, Compounds and Mixtures > Flashcards

Elements, Compounds and Mixtures Flashcards

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1
Q

The four common mixtures are?

A

Solutions, Colloids, Suspensions, Emulsions

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2
Q

What is a solution?

A

A mixture in which a soluble liquid or solid is dissolved in a solvent.

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3
Q

A mixture is made up of….?

A

Two or more substances

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4
Q

A mixture is made up of two or more substances which may be ……..or …………? Mixed in any …………?

A

Elements, compounds, proportions

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5
Q

In a solution, what is the substance being dissolved

A

A solute

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6
Q

Colloids cannot…..

A

Pass through semi-permeable membranes

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7
Q

A Solution is always …….even if coloured

A

clear

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8
Q

What are suspensions?

A

Suspensions are very small but visible particles of a solid suspended in a liquid. The cells form a suspension in whole blood.

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9
Q

What are emulsions?

A

Droplets of one liquid are suspended in another liquid. Bile salts act as emulsifiers to allow the dispersion of fats in the intestine.

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10
Q

Mixtures can be ………….. into their …………..components.

A

separated, original

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11
Q

Most matter naturally occurs as…….?

A

Mixtures

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12
Q

In a solution, the solute does not…….. out and it cannot be………. out

A

settle, filtered

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13
Q

In a solution, what dissolves a substance

A

a solvent

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14
Q

Proteins in the body form…….. mixtures.

A

Colloidal

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15
Q

What is a Colloid?

A

A mixture where particles are too small to be seen but big enough to diffract light.

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16
Q

In a mixture, the substances keep their own ……..?

A

Properties

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17
Q

Name three mixtures in the natural world?

A

Saline (salt water), air, most rocks

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18
Q

In a mixture the ……. keep their own …………….as they are not chemically …………..

A

substances, properties, bound

19
Q

Name four common mixture types?

A

Solution

Emulsion

Suspension

Colloid

20
Q

Solutions are always………

A

Clear

21
Q

What are some basic examples of solutions?

A

Salty water

Coca-cola

Wine

Vinegar

Black tea

22
Q

Solutions are always clear and can pass through……. ……. ……..(3 words)

A

Semi-permeable membranes

23
Q

What is the definition of a suspension?

It is ……….. and …………on standing.

……..are too………..to fit through ……. ………..

A

Murky, settle.

Particles, large, filter paper.

24
Q

Anything that says shake before use is probably a …..

A

Suspension

25
Q

Name two examples of a suspension?

A

muddy water

orange juice (squeezed)

26
Q

Give the definition of an emulsion?

A

Drops of one liquid are suspended in another.

Cloudy and may separate on standing.

e.g. vinaigrette

27
Q

Many substances are made up of several kinds of mixtures.

Blood contains (name four mixture examples)?

A
  1. Solution of dissolved salts and glucose
  2. Proteins as colloids
  3. Cells as a suspension
  4. Emulsified fatty substances
28
Q

Show the classification of matter diagram

A
29
Q

What is an example of a colloid?

A

mixtures containing protein such as egg whites, milk

30
Q

What is are 3 examples of a suspension?

A
  1. red blood cells in the blood
  2. starch mixed with water
  3. muddy water
31
Q

Name some solutions in the body

A

urine

blood

tears

sweat

32
Q

What is the most important solvent in the body?

A

Water

33
Q

Solutes that dissolve in water are called……

A

hydrophilic or water-loving

34
Q

Substances that do not dissolve in water are called

A

Hydrophobic or water-hating. eg oils and waxes

35
Q
A
36
Q

What types of mixtures are found in whole blood?

A
  1. Solution of salts and glucose
  2. Suspension of cells
  3. Proteins are colloids
  4. Fats are emulsified
37
Q

What kind of mixtures are found in blood plasma?

A
  1. Solutions of salts and glucose
  2. proteins are colloids
  3. Fats are emulsified

(there is no suspension of cells)

38
Q

What are particles?

A

They are molecules or ions

39
Q

What is a pure substance?

A

It is made up of identical particles (molecules or ions).

eg. Water, H2O (distilled water is made up of billions of H2O particles)

Salt and glucose.

Magnesium, Potassium etc.

40
Q

Define mixtures

A

2 or more pure substances, mixed together in any proportion.

EG, saline, blood, shampoo, milk, bleach etc

41
Q

What are elements?

A

Elements are composed of only one kind of atom.

42
Q

An element cannot be decomposed into a simpler substance.

True or false

A

True

43
Q
A

CELL BIOLOGY & CHEM 402 (13 decks)

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