Chapter 4 Reactivity of Metals Flashcards
What are minerals?
Minerals are solid elements of compounds present naturally with definite crystalline structures and chemical compositions
Examples of elements?
Gold
Silver
Mercury
What is the systematic name of Hematite and its element combination
Iron (III) Oxide, iron and oxygen
What is the systematic name of Cassiterite and its element combination
Tin (IV) Oxide, tin and oxygen
What is the systematic name for Quartz and its element combination?
Silicon Oxide, Silicon and oxygen
What is the systematic name for Bauxite and its element combination?
Aluminium Oxide, Aluminium and oxygen
What is the systematic name for Galena and its element combination?
Lead (II) Sulphide, lead and sulphur
What is the systematic name for Pyrite and its element combination?
Iron (II) Sulphide, iron and sulphur
What is the systematic name for Calcite and its element combination?
Calcium Carbonate, calcium, carbon and oxygen
What are the uses of limestone?
Construction of roads, buildings and table tops
What is the difference between a vigorous reaction and a less vigorous reaction?
A vigorous reaction produces a bright flame while a less vigorous reaction shows only a glow or a slow change in colour
What is the relationship between reactive metals and oxygen
The more reactive the metal is with oxygen, the more vigorous the reaction
What is the reactivity series of metals?
(i am not writing allat look at textbook)
What is the process of the extraction of metals?
It is a process to obtain metals from their ores
What are the 2 ways to extract metals?
Electrolysis and reduction of metal oxides with carbon
Why do gold and silver not have to be extracted?
Because they are not very reactive and dont chemically bond with other elements
Examples of metals extracted through the reduction of metal oxides by carbon
Lead
Tin
Iron
Zinc
Examples of metal extracted through electrolysis
Potassium, sodium, calcium, magnesium and aluminium
What is coke in the process of metal extraction?
carbon
What is the systematic name and chemical combination of slag
Calcium Silicate, Calcium oxide + Silicon Dioxide
Explain the production of slag
Calcium carbonate decomposes into calcium oxide and calcium dioxide. Calcium oxide react with silicon dioxide in iron ore to form slag
Examples of mining issues in Malaysia
Water pollution due to cleaning of ore
Air pollution due to burning of fuels
Sound Pollution from mining machinery
