7c. Acids and Bases Flashcards Preview

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Flashcards in 7c. Acids and Bases Deck (17)
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1
Q

What are some uses of acids in food industry

A
  • flavourings
  • preservatives
2
Q

What are the 3 common lab acids?

A

Hydrochloric

Sulphuric

Nitric

3
Q

What is the acidic ion?

A

The H+ (aq) ion

4
Q

Definition of an acid

A

A solution with higher numbers of hydrogen (H+) ions than hydroxide (OH-) ions

5
Q

What is the alkali ion?

A

The OH- (aq) ion

6
Q

What makes solutions alkaline?

A

Higher numbers of hydroxide ions that hydrogen ions

7
Q

What are the salts that form from 3 lab acids?

A
8
Q

Definition of a “salt”

A

When the hydrogen ions of an acid are replaced by +ve metal ions

9
Q

Definition of a “base”

A

A substance that neutralises an acid

10
Q

What are the 3 categories of bases?

A

Metal oxides

Metal carbonates

Metal hydroxides

11
Q

What are the products when metal oxides react with acids?

A

A salt plus water

12
Q

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

A
13
Q

Describe the metal oxides and acids experiment.

A

Acid is heated to increase reaction rate

Excess oxide is removed by filtration

14
Q

What are the products when metal carbonates react with acids?

A

A salt plus carbon dioxide plus water

15
Q

What is the reaction when carbonates react with acids?

A
16
Q

Describe a filtration apparatus

A
17
Q

What are the products when metal hydroxides react with water

A

A salt plus water