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Chemistry > S3 - Chemisty Test (3) > Flashcards

S3 - Chemisty Test (3) Flashcards

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1
Q

What is the pH of a solution a measure of?

A

How acidic or alkaline it is

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2
Q

What is the pH scale?

A

A continuous scale which gives a measure of how acidic or alkaline something is

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3
Q

What colour are:
- Acids
- A neutral solution
- Alkalis

A
  • Red to orange
  • Green
  • Darker green to blue
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4
Q

What do soluble non-metal oxides form?

A

Acidic solutions

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5
Q

What do soluble metal oxides form?

A

An alkaline solution

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6
Q

How will insoluble oxides affect a solution?

A

In no way, they have no affect on the pH of solutions

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7
Q

What are some common acids in chemistry?
What is their formula?

A

Hydrochloric acid - HCl

Sulfuric acid - H2SO4

Nitric acid - HNO3

Phosphoric acid - H3PO4

Ethanoic acid - CH3COOH

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8
Q

What are some common alkalis in chemistry?
What are their formulas?

A

Sodium hydroxide - NaOH

Potassium hydroxide - KOH

Calcium hydroxide - Ca(OH)2

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9
Q

What are neutralisation reactions?

A

When an acid reacts with a base (alkali)

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10
Q

What is always formed in a neutralisation reaction?

A

A salt

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11
Q

What is a salt?

A

An ionic compound in which the hydrogen ion has been replaced by a metal ion (or ammonium ion)

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12
Q

What are the different types of bases?

A
  • Metal oxides
  • Metal carbonates
  • Metal hydroxides
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13
Q

Which one of the 3 bases are an alkali?

A

Metal hydroxides

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14
Q

How do we lay out a neutralisation reaction equation?

A

Base + acid ~> salt + water

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15
Q

Which of the 3 bases also produce carbon dioxide as well as salt and water in a neutralisation reaction?

A

Metal carbonate

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16
Q

What is a salt made up of?

A

The metal and the acid

17
Q

What are the salt names for the following:
- Hydrochloric
- Nitric
- Sulphuric
- Carbonic
- Phosphoric

A
  • Chloride
  • Nitrate
  • Sulphate
  • Carbonate
  • Phosphate
18
Q

What is the ionic formula for each common acid?

A

H+Cl-
H2+SO4-2
H+NO3-
H3+PO4
CH3COO-H+

19
Q

What is the ionic formula for each common alkali?

A

Na+OH-
K+OH-
Ca+(OH)2-

Chemistry (7 decks)

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