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Physics + Chemistry > Reactions of Acids and Bases + their properties > Flashcards

Reactions of Acids and Bases + their properties Flashcards

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1
Q

What is pH?

A

it is the measurement of how basic or acidic a substance is. pH measures the concentration of hydrogen ions

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2
Q

An acidic solution with have a pH of?

A

below 7

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3
Q

A neutral solution will have a pH of?

A

7

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4
Q

A basic solution will have a pH of?

A

above 7

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5
Q
  1. If red litmus paper is put in a basic solution it’ll?

2. If blue litmus paper is put into an acidic solution it’ll?

A
  1. turn blue

2. turn red

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6
Q
  1. If red litmus paper is put in an acidic solution it’ll?

2. If blue litmus paper is put in a basic solution it’ll?

A
  1. stay red

2. stay blue

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7
Q
  1. what colour will blue litmus change to in a neutral solution?
  2. what colour will red litmus change to in a neutral solution?
A
  1. It’ll stay blue

2. It’ll stay red

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8
Q

What colour will the universal indicator change to if:

  1. Put into an acidic solution.
  2. Put into a basic solution
  3. Put into a neutral solution
A
  1. red, orange or yellow
  2. blue, violet or purple
  3. green
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9
Q

What colour will bromothymol blue to if:

  1. Put into an acidic solution.
  2. Put into a basic solution
  3. Put into a neutral solution
A
  1. yellow
  2. blue
  3. green
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10
Q

What colour will Phenolphthalein change to if:

  1. Put into an acidic solution.
  2. Put into a basic solution
  3. Put into a neutral solution
A
  1. Colourless
  2. pink, red
  3. colourless
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11
Q

An acid is any substance that releases what in solution?

A

Hydrogen Ions

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12
Q

acids are know as what kind of donors?

A

Proton donors

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13
Q

A base is any substance that accepts what in solution?

A

Hydrogen ions

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14
Q

A base is also known as a what kind of acceptor?

A

A proton acceptor

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15
Q

What is a base that dissolves in water known as?

A

An alkali

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16
Q

Alkalis release what in solution?

A

Hydroxide ions

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17
Q

the H ion and OH ion combine to from what?

A

Water- H2O

18
Q

An Acid neutralises a base to give us what?

A

salt and water

19
Q

acids taste?

A

sour

20
Q

acids feel?

A

rough

21
Q

Bases taste?

A

bitter

22
Q

bases feel?

A

smooth silky

23
Q

give 3 examples of households acids

A

lemon juice, vinegar and Tomato sauce.

24
Q

give 3 examples of household bases

A

handy Andy, washing powder and soap

25
Q

give 2 examples of lab acids and their respective formulas

A

Hydrochloric acid- HCl

sulphuric acid-H2SO4

26
Q

give 2 examples of lab bases and their respective formulas

A

sodium hydroxide-NaOH

magnesium hydroxide-Mg(OH)2

27
Q

how would now test for hydrogen?

A

hold a burning match at the mouth of the test-tube, if hydrogen is present, a pop sound will be heard.

28
Q

How would one test for carbon dioxide?

A

if a gas is bubbled through clear lime water [Ca(OH)2] and the lime water turns milky then CO2 is present.

29
Q

what are the 4 general reactions when working with acids and bases.

A
  1. Acid + metal hydroxide -> salt + water (neutralisation)
  2. Acid + metal oxide -> salt + water (neutralisation)
  3. Acid + Carbonate -> salt + water + carbon dioxide (neutralisation)
  4. Acid + Metal -> Salt + Hydrogen
30
Q

salt is what kind of compound?

A

An ionic compound

31
Q

What is the formula for

  1. Hydrochloric acid
  2. sulphuric acid
  3. nitric acid
A
  1. HCl
  2. H2SO4
  3. HNO3
32
Q

give all 4 names for NaHCO3

A
  1. Sodium hydrogen carbonate
  2. Sodium bicarbonate
  3. Bicarbonate of Soda
  4. Baking soda
33
Q

Where would you find acetic acid?

A

In vinegar

34
Q
  1. what is another name for tartaric acid?

2. what is it used for?

A
  1. cream of tartar

2. Baking

35
Q

what is the scientific name for fizzes

A

effervesce

36
Q

The gas for making leavened bread is made in two ways:

  1. what is this gas?
  2. give the two ways and their formulas.
A
  1. carbon dioxide
  2. a) reacting sodium bicarbonate with an acid
    carbonate+acid-> salt+water+CO2
    b) Heating the sodium
37
Q

what is the difference between a carbonate and a bicarbonate?

A

There is hydrogen in bicarbonate but there isn’t hydrogen in in carbonate.

38
Q

What is the difference between baking soda and baking powder.

A

baking powder already has an acid in the mixture but baking soda needs an acidic ingredient to react with it.

39
Q

What kind of reaction takes place between the stomach acid and the antacid.

A

neutralisation

40
Q

why did you burp shortly after taking an antacid?

A

Because carbon dioxide is released.

Physics + Chemistry (5 decks)

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