Bases And Alkalis Flashcards
Bases’ Dont
Dissolve In Water
What Is Sodium Hydroxide
It is a base because it will react with acids and neutralise them. It’s also an Alkali because it dissolves in water.
Many Bases Are…
Insoluble (unsolvable)
What are bases and what do they do
They are substances that react with acids and they also neutralise them
What are the 2 states bases’ can be
Irritant and corrosive
What is copper oxide
It is a base because it reacts and neutralises them and it is not an alkali because it does not dissolve in water.
When acids and bases react what do they form
They form salts (which is a combination of hydrochloride acid an sodium hydroxide) A common table salt. NaCl
Bases are usually…
Metal oxides, metal hydroxides, metal carbonates or metal hydrogen carbonates.
What is an opposite of an acid
A base
What is it called if it is neither an acid or alkali
Nuetral
What colour does red litmus paper go in an alkaline solution
Blue
What colour does blue litmus paper go in an acid solution
Red
What colour does the litmus paper change to when it is put into a neutral solution
It doesn’t it stays the same
What does a universal indicator do
It changes colour based on how strong an acid or alkali solution really is
What do they measure the strength with
The ph scale
What does ph 0 mean
Seriously acid
What does ph14 mean
Seriously alkali
What is ph7 (the middle of the scale)
It is a well balanced neutral
What is anything less then ph7
Acid
What is anything more than ph7
Is alkaline
What happens when u mix an acid with a base
You get neutralisation which is an chemical reaction and makes new substances
When u mix metal oxide and an acid what 2 things do u get
Salt and water
When you mix pure metal and an acid what do you get
Salt and hydrogen
