Periodic table
an object containing one type of atom
what is an element?
Plus one
what is the charge on a proton?
Changing how we live now to manage resources for the future.
what is sustainable development?
the solid that dissolves
what is a solute?
Left side
what side of the periodic table are metals?
1/1840
what is the relative mass of an electron?
Something that can be broken down by microbes
what is biodegradable?
A material that won’t dissolve?
what is insoluble?
Halogens
what are group 7 elements called?
Mass number - atomic number
how do you calculate the number of neutrons?
Coal, oil and gas
what are the 3 fossil fuels
Stir the solution
how can you speed up dissolving?
They get more reactive as you go down the group
describe the reactivity of alkali metals
Equal to the number of protons
what is the number of electrons (or atomic number)?
Sulfur compounds react with water
how does acid rain form?
Sea water
what is an example of a solution?
Fizzing or bubbles produced
what will you observe with all alkali metals in water?
2,8,8,2
To reduce groundwater pollution
why is reducing landfill important?
Boiling water
what is a good solvent?