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First you look at BIDMAS, which determines the order in which functions are completed, [Brackets, Indices, Division, Multiplication, Addition, Subtraction], which says we deal with the brackets first, so we ...

These elements are in the same group in the periodic table due to their electron configurations: fluorine: 2, 7 chlorine: 2, 8, 7 They both have 7 electrons in their outer shell, so therefore are both in gro...

We expand this term by term. To make sure we expand every term, I use the beak method. To do this, draw 2 curves over the equation from the 3x to the x , and then a second curve from the x to the + 2 . Then ...

While different tenses describe when an action happened, different moods describe how the speaker feels about the action. There are three moods in Spanish: the indicative (which will be the tense you normall...

A disproportionation reaction is when an element is both oxidised and reduced in the same reaction. You check this by looking at the oxidation state of the element at the begining of the reaction and then wh...