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The metals of group 1 (like potassium) can be identified by a flame test: A sample of the metal is placed in a bunsen flame, and the colour of the flame tells the metal. 

Potassium placed in the fl...

25%. Draw a punnet square to find this:

Write in the alleles for the parents along the top and side of the square, then match up the possible allele combinations for the children inside the square....

Both evaporation and boiling are a process where a liquid change state into a gas.

Boiling happens to all of a liquid at once and occurs only when a liquid is heated to one specific temperature, it...

The chracteristics of perfect competition are: many firms, freedom of entry and exit, all firms produce identical or homogenous products, all firms are price takers(have no influence over the price) and h...

expand the brackets to get x²-2x+3x-6=4x+22 bring all the terms to one side x²-2x+3x-6-4x-22=0 (remember:if you do something to one side, do the same thing to the other! e.g. -4x on ...