Chemistry C3 Flashcards
What kind of process is bond making?
Exothermic
Give two examples of chemicals made my continous process
- Ammonia for fertilizers
- sulfuric acid
Give 3 ways of making a reaction faster
Increase the
- temperature
- pressure
- concentration
The rate of reaction shows what?
How fast or slow a reaction is
What kind of process if bond breaking
Endothermic
What is the word equation for photosynthesis
Carbon dioxide + water > glucose and oxygen
What is combustion
The scientific word for burning
What is a catalyst?
A substance added to a chemical reaction to make it go faster
Give and example of a slow reaction
Rusting
Give an example of a fast reaction
Burning / explosions
If something is needed in small amounts, which process would be used to make them
Batch process
If something is needed in large amounts, which process is needed to make it
Continous process
What are allotropes
Different structures of the same element
Give two examples of allotropes
Graphite and diamond
What does the rate of reaction measure
How much product is made
Exothermic reactions happen at ….
Higher temperatures
Give an example of what kind of things are made in batch process
Pharmaceuticals ( medical drugs )
Endothermic reactions happen at
Lower temperatures
Name 3 properties of nanotubes amd what they are used for
- Reinforce graphite in tennis rackets
- used as industrial catalysts
- semi conductors in electrical circuits
Does a catalyst effect how much product is made?
No it just makes it faster
How do you work out percentage yield?
Actual yield
—————– X 100
Predicted yield
What are reactants turned into a chemical reaction called?
Products
What happens in endothermic reactions?
Energy is absorbed
What happens in exothermic reactions
Energy is released
