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Physical Science > Acids Alkalis (Bases) Metals And Non Metals > Flashcards

Acids Alkalis (Bases) Metals And Non Metals Flashcards

1
Q

Weak acids

A

This is acids with less hydrogen ions the PH value range from 4 to 6

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2
Q

Examples of weak acids

A

Acetic acid (vinegar)
Carbonic acid (fizzy drinks)
Lactic acid (sour milk)
Citric acid (lemon and orange)

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3
Q

Strong acids

A

This is acids with more hydrogen ions the pH range form 1 to 3

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4
Q

Examples of strong acids

A

Hydrochloric acid
Nitric acid
Sulfuric acid

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5
Q

Weak basis

A

This are bases with less hydroxide ions the pH range form 8-10

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6
Q

Examples of strong basis

A

Eno
Saliva
Soap
Lime water

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7
Q

Strong basis

A

This are bases with more hydroxide ions the pH value of 11 to 14

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8
Q

Examples of strong basis

A

Sodium hydroxide
Ammonia

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9
Q

Properties of bases

A

They turn red litmus paper blue
The pH is more than 7
They taste bitter and feel slippery
They contain hydrogen ions (OH-)
Metal oxides react with water to form basis

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10
Q

Properties of acids

A

They have a sour taste
They contain positive hydrogen ions (H+)
They have ph less than 7
Non metal oxides react with water to form acid
They turn blue litmus paper red

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11
Q

Inductors

A

Are plant dyes that change color in acid or alkaline solutions

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12
Q

The strength of acids and bases can be measured on a ph scale using

A

A universal indicator

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13
Q

Universal indicator

A

Is a mixture of dyes which change color at different ph values it can be used to determine the pH of a solution

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14
Q

Neutralisation

A

Is when a base reacts with an acid to form salt and water

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15
Q

Base+acid

A

Salt and water

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16
Q

Ammonium hydroxide+ nitric acid

A

Ammonium nitrate and water

17
Q

Salt formed nitric

A

Nitrate

18
Q

Sulphuric salt formed

A

Sulphate

19
Q

Hydrochloric salt formed

A

Chloride

20
Q

Ethanoic salt formed

A

Ethanoate

21
Q

Lactic salt formed

A

Lactate

22
Q

Citric salt formed

A

Citrate

23
Q

Metal+acid

A

Salt+hydrogen gas

24
Q

Zinc+hydrochloric acid

A

Zinc chloride+hydrogen

25
Q

Magnesium+sulphuric acid

A

Magnesium sulphate+hydrogen

26
Q

Calcium+nitrate acid

A

Calcium nitrate+hydrogen

27
Q

Test for hydrogen

A

When a burning splint is brought near hydrogen gas a poping sound is produced

28
Q

Metal carbonate+acid

A

Salt+water+carbon dioxide

29
Q

Metal+oxygen

A

Metal oxide

30
Q

Non metal+oxygen

A

Non metallic oxide

31
Q

Reactivity series

A

It is an arrangement of metals in the order in which they will react with substances
Starting with the most reactive metal and ending with the least reactive metal

32
Q

Alloy

A

It is a metal mixed with another metal or with a non metal

Physical Science (5 decks)

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