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89 Cards in this Set
- Front
- Back
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Acids taste |
Sour |
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What acid is found in the stomach? |
Hydrochloric acid |
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What is the checmical opposite of acids? |
Alkalis |
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Alkalis feel…. |
Soapy |
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Name an example of an acid and an example of an alkali |
Toothpaste soap ethanoic acid vinegar |
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True or false some alkalis and acids are safe to touch |
True |
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What does this symbol mean? And what symbol it it? |
It is the hazard symbol it means that the liquid or substance is corrosive |
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What does it mean when something is corrosive? |
It means it could burn your skin and eyes |
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How do I protect myself from hazardous substances / corrosive? |
Wear eye protection like goggles Keep the solution of the skin Wear safety gloves |
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True or false ethenoic acid does not catch fire easily and is not corrosive |
False |
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Does vinegar contain Ethanoic acid? |
Yes |
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If an acid is not mixed with any substances and it is it’s pure form does that make the solution dilute or concentrated? |
Concentrated |
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If 1 litre of ethanoic acid has 1/2 a litre of water particles does that make it dilute or concentrated? |
It makes it dilute |
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Which solution is more concentrated? Solution A: 3.7 litres of ethanoic acid Solution B: 3.6 litres of ethanoic acid and 0.1 litre of water |
Solution A as it has less water particles per litre |
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The hazards of alkalis depends on… |
The alkali And if the solution is dilute or not |
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What can you use an indicator to find out? |
Whether a solution is acidic or alkaline |
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How to indicators work? |
They contain dye which changes colour depending if the solution is alkaline or acidic |
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Name 3 plants that can be used as indicators |
Red cabbage Hisbiscus pedals Beetroot |
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Name 3 plants that can be used as indicators |
Red cabbage Hisbiscus pedals Beetroot |
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What happens to red litmus paper if it is put in an alkali? |
It turns blue |
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Name 3 plants that can be used as indicators |
Red cabbage Hisbiscus pedals Beetroot |
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What happens to red litmus paper if it is put in an alkali? |
It turns blue |
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What happens to blue litmus paper if it is put in an alkali? |
Nothing |
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What happens to red litmus paper if it is put in an acid? |
Nothing the colour stays the same |
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What happens to red litmus paper if it is put in an acid? |
Nothing the colour stays the same |
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What happens to blue litmus paper if it is put in an acid? |
It becomes res |
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What happens to litmus paper when it is put in a neutral substance |
Nothing |
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How can you tell how acidic or how alkaline a solution is? |
By using a universal indicator |
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How can you tell how acidic or how alkaline a solution is? |
By using a universal indicator |
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How do universal indicators work? |
The dyes change colour depending on how acidic or how alkaline a solution is |
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If a solution is between 0-6 on the ph scale this means the solution is a |
Acid |
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If a solution is between 0-6 on the ph scale this means the solution is a |
Acid |
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If a solution is ph is between 8-14 the. This mean the solution is |
Alkaline |
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If a solution is between 0-6 on the ph scale this means the solution is a |
Acid |
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If a solution is ph is between 8-14 the. This mean the solution is |
Alkaline |
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The lower the number the more acidic or the less acidic? On the ph scale |
More |
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If a solution is between 0-6 on the ph scale this means the solution is a |
Acid |
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If a solution is ph is between 8-14 the. This mean the solution is |
Alkaline |
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The lower the number the more acidic or the less acidic? On the ph scale |
More |
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If solution is 7 on the ph scale then this means the solution is |
Neutral |
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Name 3 substances that have a ph of 0 |
Sulfiric hydrochloric acid |
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Name 3 substances that have a ph of 0 |
Sulfiric hydrochloric and nitric acid |
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Name 2 substances with a ph of 2 |
Lemon juice Cola drinks |
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Name 1 substance with a ph of 3 |
Vinegar |
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Name 2 substances with a ph of 5 |
Tea and saliva |
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Name 2 substances with a ph of 7 |
Water and blood |
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Name 2 substances with a ph of 9 |
Toothpaste and milk |
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Name 1 substance with a ph of 13 |
Drain cleaner |
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Name 2 substances with a ph of 14 |
Sodium and potassium hydroxide |
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What is a reason / could be a reason your stomach hurts? |
You have extra acid in your stomach |
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What is neutralisation |
Neutralisation is the process of cancelling out an acid or alkali to make a solution neutral |
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What neutralises acids? |
Base substances |
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Name 3 examples of bases |
Sodium hydroxide Calcium oxide Copper oxide |
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Name 3 examples of bases |
Sodium hydroxide Calcium oxide Copper oxide |
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What is a soluble base |
An alkali |
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What is neutralisation used for? |
They can be used to get the best ph for a soil |
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What is neutralisation used for? |
They can be used to get the best ph for a soil |
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Name another use for neutralisation |
Neutralisation can be used to neutralise lakes that have acid rain mixed with it |
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How do lakes get acidic? |
Lakes get acidic when acid rain falls and dissolves with the lake water this makes the lake acidic |
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How do lakes get acidic? |
Lakes get acidic when acid rain falls and dissolves with the lake water this makes the lake acidic |
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What is the cause of acid rain? |
Acid rain occurs when sulfur dioxide gasses made from burning coal dissolves into rain water to make acid rain |
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How do salts form? |
Salts form when either when An acid reacts to a metal Or when an acid reacts with an element or compound |
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How do salts form? |
Salts form when either when An acid reacts to a metal Or when an acid reacts with an element or compound |
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What is the scientific definition of a salt? |
A compound a salt is a compound |
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What happens to the hydrogen atoms of an acid react to a metal or compound |
The hydrogen atoms of the acid are replaced with metal atoms of the metal element |
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What type of salt do we eat? |
Sodium chloride |
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What is copper sulfate used for bye farmers? |
To kill fungus |
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Many slats exsist.... |
naturally |
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what does sodium chloride do to the sea? |
Makle it salty |
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where can huge amounts of salt be found? |
In bolvainian flats and underground |
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what happens when you mix Metal+acid makes +? |
hydrogen |
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Compound + acid like copper oxide makes +? |
Water |
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what does hydrochlroic acid make? |
chloride |
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what does sulfiric acid make? |
Sulfate |
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what does nitric acid make? |
nitrate |
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name the 1st step of making salt crystals |
first pour acid into a beaker |
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name the second step of making salt crystals |
use a stiring rod to mix the compound like copper oxide with the acid |
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how much powder do you pour? |
keep on adding powder untill there is some left over |
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name the third step of making salt crystals |
using a funnel and filter paper filter out the unreacted copper oxide |
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what is the fourth step of making salt crystals |
pour the copper sulfate solution into an evaporating basin and place that basin over a beaker of boiling water which is boiled by a bunsen burner do |
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for how long do you do the 4th step of making water crystals? |
untill most of the water evaporates |
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what is the last step of making salt crystals |
leave the basin in a warm place untill the rest of the water evaporates and you are left salt crystals |
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what is this |
a beaker |
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what is this |
a test tube |
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what is this? |
a bunsen burner |
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what is this |
an evaporating basin |
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what is this |
a glass rod |
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what is this |
a funnel |
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what is this |
filter paper |
