Chemistry in Society Flashcards
What structure is metallic bonding?
Lattice structure
What is oxidation?
The loss of electrons
What is reduction?
The gain of electrons
What is redox?
A combination of oxidation and reduction
What are the methods for extracting metals?
Heat alone
Heating with carbon or carbon monoxide
Electrolysis
What is electrolysis?
The decomposition of an ionic compound into its elements using electricity
What is an electrolyte?
An ionic solution that conducts electricity
Where do reduction reactions happen?
At the cathode
Where do oxidation reactions happen?
At the anode
What is a polymer?
Polymers are long chain molecules formed by joining together a large number of small molecules called monomers.
What is addition polymerisation?
The name given to a chemical reaction in which unsaturated monomers are joined, forming a polymer.
What is a repeating unit?
A repeating unit is the shortest section of a polymer chain which, if repeated would yield the complete polymer chain.
What are the elements required for plant growth?
Nitrogen, Phosphorus and Potassium
NPK
What is metallic bonding?
Metallic bonding is the electrostatic force of attraction between positively charged ions and delocalised electrons.
In the haber process what is used to produce ammonia?
Nitrogen and hydrogen
What are fertilisers?
Fertilisers are substances which restore elements essential for healthy plant growth.
In the otswald process what is used top make nitric acid?
Ammonia and air
What does the otswald process produce?
Nitric acid
What catalyst is used in the otswald process?
A platinum catalyst
What is produced in the haber process?
Ammonia
What catalyst is used in the haber process?
An iron catalyst
