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(D)2022 Science Grade 9 > Cemistry Acids And Bases > Flashcards

Cemistry Acids And Bases Flashcards

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1
Q

Sulphuric acid chemical formula

A

H2SO4

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2
Q

Hydrochloric acid chemical formula

A

HCl

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3
Q

Nitric acid chemical formula

A

HNO3

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4
Q

Carbonic acid chemical formula

A

H2CO3

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5
Q

Phosphoric acid chemical formula

A

H3PO4

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6
Q

What does the pH scale do

A

Measures how acidic or basic a substance is.It ranges from 0 to 14

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7
Q

What does a pH lower than 7 show

A

The solution is an acid

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8
Q

What does a pH higher than 7 show

A

A base or alkaline

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9
Q

If a pH is 7 what is it

A

Neutral

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10
Q

Strong acids have a (…) pH than weak acids and strong bases have a (…) ph than bases

A
  1. LOWER
  2. LOWER
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11
Q

Is 7 on the pH scale acidic or basic

A

It is neither acidic or basic

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12
Q

Why do scientists sue the pH scale

A

Use to show the strength of an acid or base

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13
Q

How is pH measured

A

By dipping litmus paper not a solution such as water or other substances

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14
Q

What are chemicals called that are very basic or acidic

A

They are called “reactive”

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15
Q

What are examples of acidic and basic substances

A
  • Household drain cleaners contain Iye, a alkaline very reactive
  • vinegar and lemon juice are candid ich substances
  • laundry detergents and ammonia are basic
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16
Q

Metal + acid —>

A

Salt + hydrogen

17
Q

The salts of sulphuric acids are called

A

Sulphates

18
Q

The salts of hydrocloric acid are called

A

Chlorides

19
Q

The salts of nitric acid are called

A

Nitrates

20
Q

Metal carbonate + acid —>

A

Salt +carbon dioxide + water

21
Q

What are bases

A

They are the oxides or hydroxides of metals

22
Q

When is a base an alkali

A

When the base is soluble in water

23
Q

Sodium hydroxide chemical formula

A

NaOH

24
Q

Ammonia chemical formula

A

NH3

25
Q

Calcium hydroxide chemical formula

A

Ca(OH)2

26
Q

Sodium carbonate chemical formula

A

Na2CO3

27
Q

Magnesium hydroxide chemical formula

A

Mg(OH)2

28
Q

Ammonium hydroxide

A

NH4OH

29
Q

Base + acid —>

A

Salt + water

(D)2022 Science Grade 9 (9 decks)

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