1) Sketch an atom. Label the nucleus and electron.
2) The symbols for calcium carbon and sodium.
(Ca) (C) (Na)
3) Which elements properties are more similar to magnesium: calcium or
4) Describe how you would work out the electronic structure
Heat transfer Infrared radiation:
Heat can be transferred by Conduction, Convection, radiation, evaporation and condensation.
Conduction, convection, evaporation and condensation require particles to transfer heat.
All objects can
Biology unit 2
Diffusion: Is the spread of high concentration to low concentration. the
particles spread. the movement is called net movement and concentration
gradient. happens in gases. oxygen is transported from the lung to the cells
through red blood
1) The food groups that you should eat to have a balanced diet is.
Fruit and vegetables
Meat, fish, eggs and beans
Milk and dairy foods
Fat and sugar
2) Jobs from high energy to low energy.
Atoms and elements are the building blocks of chemistry
-everything is built up from atoms!
Atoms are made up of protons, neutrons and electrons.
When elements react they produce compounds.
a) All substances are made of atoms.
A substance that is made of
Diet and Exercise
Protein repairs and creates new tissue is made up of amino acids.
Carbohydrates are energy that will be processed quickly such as sugars.
Fat is stored energy for future and is butter, margarine and oil.
Water is used for most of
1) Cracking means splitting up long chain hydrocarbons. It is done turn long chain hydrocarbons
in to smaller ones.
2) An example is Diesel, when cracked it gives petrol, paraffin and ethene for plastics.
3) Alkenes have a C=C double bound.
1) Non renewable energy sources will never run out.
Hydroelectric are all renewable energy sources.
2) In a gas fired station electricity is generated by
The fossil fuel is burned to convert its stored chemical energy into
Heat can be transferred through radiation, conduction or convection
An object that is cooler than its surroundings absorbs more radiation than it absorbs.
Solar hot water panels have a matt