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JC Science > Acids And Bases > Flashcards

Acids And Bases Flashcards

1
Q

Give two lab bases

A 
Sodium hydroxide (NaOH)
Calcium hydroxide (Ca(OH)2)
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2
Q

Give 3 everyday examples of bases

A

Drain cleaner, washing up liquid, toothpaste etc.

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3
Q

Give two examples of everyday acids

A 
Citric acids (fruit)
Carbonic acids ( fizzy drinks)
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4
Q

Name an indicator

A

Litmus paper

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5
Q

What is the effect on red and blue litmus paper if an acid is present

A

Red litmus paper stays red and blue litmus paper turns red

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6
Q

Give the effect on red and blue litmus paper if a base is present

A

Red litmus paper turns blue and blue litmus paper stays blue

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7
Q

Give the effect on red and blue litmus paper if a neutral substance is present

A

Both coloured litmus paper stay the same

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8
Q

Give two lab acids and their formulas

A 
Hydrochloric acid (HCI)
Sulfuric acid (H2S04)
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9
Q

What is the pH scale

A

This scale tells you if a substance is an acid or base or neutral and also how acidic or akaline it is.

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10
Q

Give an chemical equation that shows what is produced when an acid and a base mix

A

HCL + NaOH ➡️ NaCL + H2O

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11
Q

What is produced when an acid and base are combined?

A

Salt and water

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12
Q

Acid in the

Base in the

A

Attic

Basement

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13
Q

Give the word equation of an acid plus a base

A

Hydrochloric Acid ➕ Sodium hydroxide ➡️ Sodium chloride ➕ Water

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14
Q

What is a burette used for

A

A burette measures the amount of acid needed to neutralise a base

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15
Q

In which instruments are the acids and bases measured.

A

Pipette=Base

Burette= Acid

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16
Q

What colour is neutral on the pH scale?

A

Yellow/green

17
Q

How many colours are on the pH scale?

18
Q 
Acids = pH _ to _
Bases= pH _ to _
A

Acids= pH 0-7

Bases=pH 7-14

19
Q

What neutralises acid in soil?

20
Q

Give 3 everyday examples of neutralisation

A

Indigestion tablets are bases that neutralise stomach acids.
Toothpaste is a base that neutralises acids in the mouth.
Wasp stings are basic and can be neutralised with vinegar

21
Q

What is the formula for the reaction of acids with metals

A

Zinc+hydrochloric acid➡️zinc chloride+hydrogen

Zn+2HCl➡️Zn Cl2+H2

22
Q

Explain what an alkali is with an example

A

A base that is soluble in water

Toothpaste

23
Q

Name an indicator to use in the titration experiment and it’s colour change

A

Methyl orange

Turned from orange to pink when neutral.

24
Q

Name five substances that you could test the pH of.

A 
Water
Lemon juice
Vinegar
Soap solution
Sparkling water
25
Q

How to test for hydrogen

A

Test with a lighted splint as hydrogen burns with a pop.

JC Science (53 decks)

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