ALL OF IT Flashcards
Main Ingredient in fizzy drinks
Carbon dioxide
Taste of acids
sour
Names of some acids
Hydrochloric acid Nitric Acid Acetic acid Citric acid Sulphuric acid Carbonic acid
Why are some acids are more dangerous?
Because some of them are stronger than others, and they corrode things.
What is an indicator?
An indicator tests for acids and alkali
Examples of common laboratory acids
Hydrochloric acid
Sulphuric acid
Nitric acid
Common laboratory alkalis
Sodium Hydroxide
Ammonia
Calcium Hydroxide (marble chips)
What is a neutral substance?
Litmus paper is not affected by neutral substances. It stays green. It is usually harmless.
Examples: Water, sugar solution, sodium chloride solution (salt)
What colour does blue litmus go in acids?
Red
What colour does litmus turn in neutral substances?
Stays green (pH 7)
What colour does red litmus go in alkalis?
Blue
What does a pH scale measure?
The strength of acids and alkalis
What are the pH numbers of strong and weak acids and alkalis??
pH 1 to pH 3 is a strong acid. pH 4 to pH 6 is a weak acid. pH 8-11 is a weak alkali, and pH 12-14 are strong alkalis.
What is meant by neutralization?
Adding either acids into alkalis or alkalis into acids to make them go to pH 7.
What is meant by neutralization?
Adding either acids into alkalis or alkalis into acids to make them go to pH 7.