Acids and Alkali Flashcards
1
Q
Acids definition/properties
A
- α chemical with pH less than 7
- has lots of hydrogen ions
- tastes sours
2
Q
Safety precautions for handling acids and alkali
A
- focus when handling
- wear gloves, closed shoes and goggles
- make sure the space is clear
3
Q
Examples of acids
A
- citric acids
- hydrochloride acid
4
Q
Alkali/base definition
A
Α chemical with lots of hydroxide ions And has α pH more than 7
5
Q
Examples of alkali
A
- caustic soda
- caustic potash
- slaked lime (lime water)
6
Q
Properties of alkali/bases
A
- alkali dissolves in water
- caustic potash
- “soapy” feeling
7
Q
Hydrogen ion symbol
A
H⁺
8
Q
Hydroxide ion symbol
A
OH⁻
9
Q
pH level indicators
A
- universal indicator (chemical that changes colour)
- litmus paper (α paper strip that changes colour)
- methylene blue (α chemical that turns different shades of blue)
- natural indicators (cabbage juice, turmeric, tea)
