Acids Flashcards
1
Q
What is an acid?
A
Substance which contains and releases protons (as positive hydrogen ions) in an aqueous solution.
2
Q
What is a salt?
A
Compound produced when a positive hydrogen ion is replaced by a metal
3
Q
Define “hydrated salt”.
A
Solid salt crystal that contains water of crystallisation
4
Q
What is water of crystallisation?
A
Water that is chemically bonded into a compound’s crystalline structure
5
Q
What term is used to describe a substance that contains no water of crystallisation?
A
Anhydrous
6
Q
How do we revert a hydrated salt to an anhydrous salt?
A
- Heat hydrated salt
- Bonds holding water molecs within crystalline structure = broken ; water released as gas
- Leaves behind anhydrous salt - no more crystalline structure ; only lattice
