8b. Reactions of acids Flashcards

1
Q

What is meant by neutralising an acid?

A

Increasing the pH value towards 7

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2
Q

Why is neutralisation important?

A

Because acidic conditions can sometimes cause problems

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3
Q

Give some examples of neutralisation in everyday life.

A

Adding lime to soil

Washing hair with shampoo

Brushing teeth with toothpaste

Taking antacids for indigestion

Adding baking soda to bee stings

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4
Q

Definition of a “base”

A

A substance that neutralises an acid

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5
Q

What are the 3 categories of bases?

A

Metal oxides

Metal carbonates

Metal hydroxides

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6
Q

Definition of a “salt”

A

a product formed when the H+ (aq) ions of an acid are replaced by +ve metal ions

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7
Q

What are the salts that form from 3 lab acids?

A
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8
Q

What are the products when metal oxides react with acids?

A

A salt plus water

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9
Q

What is the reaction that happens when oxides react with acids?

A
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10
Q

Metal oxides and acids experiment

A

Acid is heated to increase reaction rate

Excess oxide is removed by filtration

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11
Q

Fltration apparatus

A
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12
Q

What are the products when metal carbonates react with acids?

A

A salt plus carbon dioxide plus water

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13
Q

What are the products when metal hydroxides react with water

A

A salt plus water

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14
Q

What is the reaction when carbonates react with acids?

A
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