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Y8 Chemistry > Acids, Alkalis, Neutralisation, Salts > Flashcards

Acids, Alkalis, Neutralisation, Salts Flashcards

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1
Q

Acids

A

A solution with a ph level of less than 7

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2
Q

Alkali

A
  • soluble base
  • ph level more than 7
  • chemically opposite to acids
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3
Q

Corrosive

A

-when a substance can burn you skin or eyes

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4
Q

Concentrated

A

-solution that has a large number of solute/acid particles per unit volume

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5
Q

Dilute

A

Solution that has a few solute/acid particles per unit volume

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6
Q

Strong acids

A

-can wear away materials

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7
Q

Caustic

A
  • able to burn skin

- damage other materials

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8
Q

Neutral substance

A

-not acidic or alkaline

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9
Q

pH

A

Amount of hydrogen

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10
Q

pH 0-6

A

Acidic

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11
Q

pH 7

A

Neutral

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12
Q

pH 8-14

A

Alkaline

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13
Q

Universal indicator or litmus paper colours

A
  • acids turn red
  • alkali turn blue
  • neutral turns green
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14
Q

Indicator

A

Substance that changes colour to show whether a solution is acidic or alkaline

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15
Q

Litmus paper

A

-An indicator

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16
Q

Universal indicator

A

-indicator of pH level

17
Q

pH scale

A

It shows whether a substance is acidic, alkaline or neutral

18
Q

Neutral

A
  • solution that is neither alkaline or acidic

- pH 7

19
Q

Base

A

-substance that can neutralise an acid
- makes products salt + water
-

20
Q

Neutralisation

A

-reaction where an acid cancels out a base

21
Q

Equation for neutralisation

A

Acid + base -> salt + water

22
Q

Salt

A

Compound formed when an avid reacted with a metal/ compound

23
Q

Nitric acid makes which salt

A

Nitrate

24
Q

Sulphuric acid makes which salt

A

Sulfate

25
Q

Hydrochloride acid makes which salt

A

Chloride

26
Q

Salt definition in terms of atoms

A

-compound made when hydrogen atoms of an acid are replaced by atoms of a metal element

27
Q

Metal and acid makes

A
  • salt

- hydrogen

28
Q

How to make copper sulfate crystals

A

1- add copper oxide to dilute sulfuric acid
2- filter to remove any excess copper oxide
3- heat copper sulfate solution to evaporate water
4-leave in warm place for crystals to develop

Y8 Chemistry (11 decks)

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