made up of more than one type of atom bonded together
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what does a mixture contain?
made of more that one type of element or compound NOT bonded together.
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whats the charge of protons neutrons and electrons?
protons are positive neutrons are neutral and electrons are negative
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whats there charge?
protons= 1 neutrons= 0 and electrons= -1
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whats the mass?
protons=1 neutrons=1 electrons= almost zero
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what does the periodic table tell you?
the atomic number and the mass number
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whats the atomic number?
the number of protons which is the same as the number of electrons
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how do you work out the mass number?
number of protons+number of neutrons
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how do you find neutrons?
mass number-atomic number
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whats a molecule?
two or more atoms that are chemically bonded together
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whats an ion?
a molecule or atom that becomes positively or negatively charged
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hows an ion created?
an ion is created when an atom loses or gains electrons. gaining electrons makes a negative ion. and losing electron makes a positive ion.
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what can gold straight from the ground be made into?
jewllery,electronics
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what can marble straight from the ground be made into?
building
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what can limestone straight from the ground be made into?
building,making other materials
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what can sulfur straight from the ground be made into?
sulphuric acid,fertilisers,car batteries
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what is crude oil a mixture of and how can it be separated?
hydrocarbons and can be separated by fractional distillation
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whats crude oil used for?
fuels and plastics
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how do you separate rock salt?
through filtration and evaporation
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whats rock salt used for?
flavouring food
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whats an ore?
its a rock which economically worth while to extract a metal.
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whats a reducing agent?
removes oxygen from oxides
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whats a reactivity series?
this is a list of chemicals in order of reactivity.
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how are gases separated from the air?
by liquefying the air and separating the liquids by fractional distillation
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whats argon used for?
mainly for lighting
26 of 32
whats the disadvantages of mines and quarries?
damage the appearance of the landscape,dust and nose affect the nearby area,increase traffic and pollution,processing ores produces carbon dioxide which adds to global warming,
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whats sustainability?
using resources in a way that balances between human and environmental needs
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whats stake holders?
they're consulted and long term impact on communities is considered.
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whats phytomining?
way of reducing impact of mine and quarries
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what are the total mass of products and the total mass of reactants?
they will always be the same as each other
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who does balanced symbol equations help?
chemists.it helps them calculate how much raw materials they need
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Other cards in this set
Card 2
Front
what does a compound contain?
Back
made up of more than one type of atom bonded together
Card 3
Front
what does a mixture contain?
Back
Card 4
Front
whats the charge of protons neutrons and electrons?
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