Resources and mining
What is the difference between a renewable and non-renewable resource?
Renewable: naturally replenished; non-renewable: finite and takes very long to form.
What type of bonding occurs between a metal and a non-metal
ionic
What particle has a negative charge
Electron
What is a polymer
A large molecule made from repeating smaller units
What is the chemical symbol for gold?
Au
What is an ore, and why is it mined?
A naturally occurring material containing enough valuable mineral/metal to be economically extracted
What type of bonding involves sharing electrons
Covalent
What particle determines the identity of an element
No. of protons
What small molecules join together to form polymers
Monomers
What planet is known as the Red Planet
Mars
What is an alloy, and why are alloys useful?
A mixture of metals, or a metal with another element, designed to improve properties such as strength or corrosion resistance.
What type of bonding is found in pure metals
Metallic
Where are electrons found in an atom
Shells surrounding the nucleus
Is polyethylene a natural or synthetic polymer
Synthetic
How many bones are in the typical adult human body
206
Which metal is extracted from bauxite ore?
Aluminium
In ionic bonding, are electrons shared or transferred
transferred
How many electrons can the first electron shell hold
2
Name one natural polymer
Rubber, cotton, wool
What gas do humans need for respiration
Oxygen
How can mining and processing ores negatively impact the environment?
Habitat destruction, pollution, soil erosion, or water contamination
What holds positive metal ions together in metallic bonding
Attraction between positive metal ions and delocalised electrons
What is the electron configuration of sodium (11 electrons)
2,8,1
What process joins many monomers together to make a polymer?
Polymerisation
What is the largest ocean on Earth
Pacific