The flashcards below were created by user
Anonymous
on FreezingBlue Flashcards.
-
Gas
A state of matter characterized by no definite shape or volume.
-
molecule
a small group of atoms held together by covalent bonds
-
fossil fuel
fuel such as coal, oil or gas that was formed millions of years ago by plant and animal remains
-
sedimentary
rock type, made up of layers created over hundreds of years, formed by pressure.
-
sediment
tiny particles like sand that are deposited on the ocean floor.
-
carbon monoxide (CO)
a lethal, odourless gas that results from the incomplete combuction of carbon and its compounds
-
nitrogen oxide
gaseos molecules containing nitrogen and oxygen atoms according to the formula NOx . these pollutants are formed due to the high temperatures created by the combustion of fossil fuels.
-
sulphur dioxide
pollutant gas released from burning sulphur- containing fuels, which cause acid rain.
-
Particulate
a tiny bit of a solid
-
pollutant
harmful substance in the environment
-
correlation
being able to draw a conclusion form two variables in a set of data, how one effects the other.
-
smog
air pollution that is caused, for example by fossil fuels being burned
-
acid rain
contains quantities of carbonic, nitric and sulfuric acids
-
Hydrocarbons
Organic compounds consisting of only carbon and hydrogen.
-
hydrocarbon + oxygen
water + carbon dioxide
-
Oxidation
The loss of electrons by a substance. Biological oxidation may involve the addition of oxygen or the loss of hydrogen.
-
reduction
the process of electron gain
-
-
Reactants
The chemical formula to the left of the arrow represent the starting substances.
-
Products
The substances formed as a result of a chemical reaction.
-
Element
Substance that cannot be decomposed into simpler substances
-
molecule
a small group of atoms held together by covalent bonds
-
Conservation of mass
the total mass of chemicals are the same at the end of a reaction as at the beginning. No atoms are created or destroyed and so no mass is gained or lost
-
Compound
A pure substance consisting of two or more elements, with a definite composition, that can be broken down into simpler substances by chemical methods.
-
flue gas desulphurisation
industrial process whereby sulphur is removed from a waste gas
-
biofuel
fuel produced from renewable plant material (biomass)
-
sustainable
resource or process that will still be used in future generations
-
Catalyst
A substance that increases the rate of reaction by lowering the activation energy.
-
catalystic converter
a device fitted to vehicle exhausts to reduce the level of nitrogen oxides and unburnt hydrocarbons emitted.
|
|