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CHEM 1110 > Chemistry of Taste > Flashcards

Chemistry of Taste Flashcards

1
Q

What happens when food molecules dissolve in silva?

A

it activates taste simulators in the mouth

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2
Q

Does the brain interpret simulators that create taste?

A

yes

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3
Q

Where are taste buds located?

A

papillae

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4
Q

What are the 5 types of taste receptors?

A

salty, sweet, sour, umami, bitter

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5
Q

What kind of threshold do sweet and salty tastes have?

A

high

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6
Q

What kind of thresholds do sour tastes have?

A

low

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7
Q

What do taste cells release?

A

neurotransmitters

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8
Q

What is sour taste?

A

generally measures pH, Hydrogen ions

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9
Q

What is salty taste?

A

sodium and potassium ions, ions accentuate flavours

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10
Q

What is bitter taste?

A

cellular response to bitterness complex is relatively slow

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11
Q

What is sourness directly correlated to?

A

pH

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12
Q

What happens to pH as something is more acidic?

A

lower pH

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13
Q

What is the Arrenhius definition of an acid?

A

produces H+ ions in solution
H+ is synonymous with a proton

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14
Q

What is the Arrenhius definition of a base?

A

produces OH- in solution

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15
Q

What is a neutral pH?

A

7

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16
Q

Are acids or bases more concentrated?

17
Q

How many times more concentrated is 10^6 than 10^7?

18
Q

What do strong acids and strong bases do in solution?

A

completely dissociate
will only have ions in solution, no compounds

19
Q

What do weak acids and weak bases do in solution?

A

weakly dissociate
can have ions as well as compounds in solution

20
Q

What are the strong acids?

A

HCl, HBr, HI, HNO3, H2SO4, HClO4

21
Q

What are the strong bases?

A

LiOH, NaOH, KOH, Ca(OH)2, Sr(OH)2, Ba(OH)2

22
Q

What is the pH equation?

A

pH=-log[H+]

23
Q

Can acidity be negative on the pH scale?

24
Q

Can solutions be infinitely concentrated?

A

no, there is a limit as to how much a solute can dissolve in solution

25
Q

What does unsaturated mean?

A

more solute dissolves

26
Q

What does saturated mean?

A

no more solute dissolves

27
Q

What does supersaturated mean?

A

crystals may grow

28
Q

What is the inverse of pH?

29
Q

What does pH+pOH equal?

30
Q

What happens when you mix an acid and a base?

A

Acid + base –> salt + water

31
Q

What is neutralization?

A

base and an acid and neutralizing the H+ in the equation

32
Q

What is an indicator?

A

substance that is basic or acidic in the solution, it will turn a given colour (clear to red or blue to neutral), telling you that the pH changed

CHEM 1110 (26 decks)

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