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2nd Year > Acids, Bases and Salts - Neutralisation > Flashcards

Acids, Bases and Salts - Neutralisation Flashcards

1
Q

Simple definition of an Acid

A

Acids are substances with a pH below 7

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2
Q

Simple definition of a Base

A

Bases are substances with a pH above 7

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3
Q

Simple definition of an Alkali

A

Alkalis are soluble bases

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4
Q

What does the pH scale measure and what is the range?

A

the pH scale measures acidity. Most substances have a pH between 0 and 14

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5
Q

The pH of an acid

A

pH 1-6

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6
Q

The pH of a neutral substance

A

pH 7

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7
Q

The pH of a base

A

pH 8-14

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8
Q

The colours of a strong acid and weak acid in Universal Indicator

A

Strong Acid - Red, Weak Acid - Orange/Yellow

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9
Q

The colours of a Strong base and weak base in Universal Indicator

A

Strong Base - Purple, Weak Base - Blue

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10
Q

Neutralisation

A

The reaction of an acid with a base

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11
Q

Metal + Acid

A

Salt + Hydrogen

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12
Q

Base + Acid

A

Salt + Water

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13
Q

Metal + Carbonate

A

Metal + Water + Carbon Dioxide

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14
Q

Test for Hydrogen

A

Lighted splint, gas ignites with a squeaky pop

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15
Q

Test for Carbon Dioxide

A

Bubble gas through limewater, the limewater turns cloudy

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16
Q

Test for Oxygen

A

Oxygen gas reignites a glowing splint

17
Q

Zinc + Sulphuric Acid

A

Zinc Sulphate + Hydrogen

18
Q

Copper Oxide + Sulphuric Acid

A

Copper Sulphate + Water

19
Q

Magnesium Oxide + Nitric Acid

A

Magnesium Nitrate + Water

20
Q

Magneisum + Hydrochloric Acid

A

Magnesium Chloride + Hydrogen

21
Q

Examples of very reactive metals

A

Potassium, Sodium, Calcium (produced by electrolysis)

22
Q

Examples of reactive metals

A

Magnesium, Aluminium (produced by electrolysis)

23
Q

Examples of low reactivity metals

A

Zinc, Iron, Tin (can be reduced by Carbon)

24
Q

Examples of very low reactivity (inert) metals

A

Copper, Silver, Gold (found uncombined in nature)

2nd Year (3 decks)

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