Chemical Changes...C5.

  • Created by: cieran_10
  • Created on: 20-06-18 17:10
What are acids?
Substances that produce hydrogen ions when added to water.
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What is formed when a substance is dissolved in water?
An aqueous solution.
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What do excess hydrogen ions do to a soltion?
Make it more acidic.
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What is the pH value of a strong acid?
1.
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What neutralises acids?
Bases.
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Name two bases.
Metal hydroxides and metal oxides.
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What are alkalis?
Bases that dsissovle in water, to form alkaline solutions.
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What are alkalis an example of?
Soluble hydroxides.
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What ions do alkalis form?
They produce hydroxide ions.
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In an aqueous solution, what does HCl ionise completely into?
Hydrogen and chloride ions.
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What are strong acids?
Ones that ionise completely in aqueous solutions.
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What happens when ethanoic acids dissvoles in water?
It does not ionise completely and the ehthanoic acid molecules remain as molecules in the soltion.
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How can you calculate the pH value of a solution from its concentration of hydrogen ions?
By counting the number of 0s before and after the decimal point
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Other cards in this set

Card 2

Front

What is formed when a substance is dissolved in water?

Back

An aqueous solution.

Card 3

Front

What do excess hydrogen ions do to a soltion?

Back

Preview of the front of card 3

Card 4

Front

What is the pH value of a strong acid?

Back

Preview of the front of card 4

Card 5

Front

What neutralises acids?

Back

Preview of the front of card 5
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