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Physical and chemical changes
Transcript of Physical and chemical changes
11th March 2016
To know the difference between atoms and mixtures and compounds
To understand the use of phase notation
To deduct chemical equations when reactants and products are specified.
To explain observable changes in physical properties and temperature during changes of state.
You are given 14.05 g of SO2, how many molecules is this?
How many atoms of chlorine are in 16.50 g of iron(III) chloride?
Atoms of different elements combine in fixed ratios to form compounds, which have different properties from their component elements. • Mixtures contain more than one element and/or compound that are not chemically bonded together and so retain their individual properties. • Mixtures are either homogeneous or heterogeneous.
Deducing chemical equations
Watch the board
Sulphur and its allotropes
Rhombic and monoclinic = 96C