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The perfect tense (in french le passé composé) is used to describe completed actions, whereas the imperfect tense (l'imparfait) refers to an event that used to happen, or an action that cannot be describe...

The carbon atoms in diamond make four bonds The carbon atoms in graphite make three bonds Graphite has delocalised electrons which can move through the graphite to carry a charge Diamond does not have del...

• Vaccines contain dead or inactive forms of a pathogen. - These dead or inactive forms stimulate the white blood cells to produce antibodies against the pathogen. - If a person is infected by the pat...

The Reichstag fire was just one of the factors that contributed to the consolidation of Nazi power. It was significant in that it gave the Nazis the excuse they needed to gain control over their political...

So here we have a quadratic equation because it has the structure a^2 + bx + c. In order to factorise a quadratic we first need to look for two numbers that we can multiply together to get 6 and add toget...