First End of Topic Test 😠Flashcards
What is a concentrated acid?
An acid with lots of acid dissolved in a bit of water
What is a Dilute Acid?
An acid that has a small amount dissolved in a measured amount of water
In acids the solvent is always _ _ _ _ _
Water
Acids are what?
A solution
Where would you find Hydrochloric acid?
The human stomach, to help digest food
What is nitric acid used in?
Fertilisers
What is Sulphuric Acid used in?
Car batteries
Ethanoic acid is in what?
Vinegar
Citric acid is in what?
Lemons, oranges and other citric fruits
What is carbonic acid in?
Fizzy drinks
Sodium hydroxide
(Caustic soda)
Used to make oven cleaners and drain cleaners
Calcium hydroxide (lime)
Used to treat soil which is too acidic for plants to grow properly
Magnesium hydroxide
(Milk of magnesia)
Used to make indigestion remedies
Ammonia
Used to make fluids which clean silver and brass
What colour does RED CABBAGE indicator go in acid?
Red/pink
What colour does RED CABBAGE indicator go in alkali?
Green
What is LITMUS made of?
Lichens
What pH number(s) is considered ‘strongly acidic’?
And what colour does it go?
0-2
Red
What pH number(s) is considered ‘weakly acidic’?
And what colour does it go?
4-6
Orange/yellow
What pH number(s) is considered ‘neutral’?
And what colour does it go?
7
Green
What pH number(s) is considered ‘weakly alkaline’?
And what colour does it go?
8-9
Blue/green
What pH number(s) is considered ‘strongly alkaline/weakly alkaline’?
And what colour does it go?
10-11
Dark blue
What pH number(s) is considered ‘strongly alkaline’?
And what colour does it go?
12-14
Purple
A substance is called a base if it is a _ _ _ _ _ _ _ _ _ _ or _ _ _ _ _ _ _ _ _ _ _ _ _ _
Eg. Copper oxide
Metal oxide, metal hydroxide
