Acids and metals Flashcards Preview

Core Chemistry > Acids and metals > Flashcards

Flashcards in Acids and metals Deck (10)
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1
Q

What causes indigestion

A

Too much acid in the stomach

2
Q

What causes heartburn

A

When too much acid in the stomach is able to escape the top of the stomach and into the tue connecting to the mouth.

3
Q

What are indigestion pills

A

Antacids, alkalis, bases

4
Q

What is the neutralisation formula

A

Acid + Base —> water + salt
Or
Acid + Carbonate —> Water + salt + carbon dioxide

5
Q

What is the difference between a base and alkali

A

An Alkali is a base that has been dissolved in water. Not all bases are soluble

6
Q

Why does the stomach produce acid

A

To digest food and kill bacteria

7
Q

Chemical tests

A
Chlorine-litmus paper bleaches 
Acids-litmus paper goes red
Alkali-litmus paper goes blue
Oxygen-relight glowing splint
Carbon dioxide-limewater goes cloudy
Hydrogen-squeaky pop
8
Q

Uses of chlorine

A

Making PVC
killing microorganisms in water
Manufacturing bleach and cleaning products

9
Q

How can iron be extracted from haematite

A

Heating it with carbon

Iron oxide + carbon —> iron + carbon dioxide

10
Q

How can metals more reactive than zinc be extracted

A

Electrolysis of the molten ore