Topic 8 Flashcards
1
Q
Reaction rate
A
a measure of how fast a reaction occurs
2
Q
4 ways to speed up a reaction
A
- Increase the temperature
- Increase the surface area
- Increase the concentration
- Agitation
3
Q
Catalyst
A
a substance that speed up the rate of a reaction without be changed itself (eg.) enzyme
4
Q
Inhibitors
A
substances that slow down a chemical reaction
eg. certain bacteria
5
Q
Corrosion
A
oxidation of metals or rocks when exposed to air or moisture
common type is rust
6
Q
Combustion
A
Highly exothermic combination of a substance with oxygen
- OXYGEN always a reactant in combustion
- CO2 and water are common products
7
Q
Galvanisation and electroplating
A
Galvanisation is the process of coating metals with a thin layer of zinc. This makes it more resistant to corrosion
Electroplating is the process of covering a metal with another metal by electrolysis
