Chemistry- topics 3+4 Flashcards
1
Q
Oxygen test
A
Glowing split relights
2
Q
Carbon dioxide test
A
Bubble through limewater and it turns cloudy
3
Q
Chlorine
A
Damp blue litmus paper turns read and bleaches white
4
Q
Electrolysis
A
Splitting a compound using electricity
-Hcl produces hydrogen gas and chlorine
5
Q
Smart alloys
A
Shape memory- return to original shape e.g. Glasses frames
6
Q
Gold
A
- Jewellery/ fillings
- shiny
- unreactive
7
Q
Aluminium
A
- window frames/ aircraft
- low density
- corrosion resistant
- forms strong alloys
8
Q
Copper
A
- pipes/electrical wires
- hard
- strong
- good conductor
- high melting point
9
Q
Investigation to compare indigestion remedies
A
1- crush tablet + dissolve in water 2- add universal indicator (Turn purple) 3- add acid until it turns green 4- repeat + then test other tablets - more acid needed the better the tablet
10
Q
Hydrogen test
A
Lit splint makes squeaky Pop
