Topic 8: Reaction Rate Flashcards
1
Q
Four Factors that can Affect the Rate of a Chemical Reaction
A
- The presence of a catalyst/inhibitor
- Concentration of the reactants
- Surface area of the reactants
- Temperature of the reactants
2
Q
Reaction Rate
A
- Measure of how fast a reaction occurs
3
Q
Catalyst
A
- Substance that speeds up the reaction rate without being changed itself
- Does not affect the amount of product produced in a reaction
4
Q
Enzyme
A
- Natural catalyst made up by living things
- Almost all chemical reactions that take place in the body are enzymes
Ex. salvia glands
5
Q
Inhibitor
A
- Substance that slows down or prevents a reaction without changing itself
6
Q
Corrosion
A
Occurs when oxygen and moisture in the air reacts with a metal
7
Q
Rust
A
- Occurs when oxygen reacts with iron producing iron oxide
8
Q
How can you Protect Metal from Corrosion?
A
- Paint a thin layer of paint
- coat metal with a thin layer of zinc
(galvanization)
9
Q
What Products do we Galvanise?
A
- Houses and building under construction that are exposed to moisture and air
10
Q
Electroplating
A
- Process of covering a metal with another metal by using electrolysis
