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Generally, molecules are coloured as they absorb visible frequencies of light, to promote an electron to a higher energy level, so the other (complementary) frequencies of light pass through the sample an...

We can split this power into two bits - the negative sign and the fraction.

Let's deal with the negative sign first and forget about the fraction.

So a negative always means '1 over', or the...

So, when two molecules are bonding to each other they are always trying to achieve the same state, which is having a full outer shell of electrons. Ionic and Covalent bonding are two different ways of get...

Context is a key part of any essay. You not only have to consider the historical context of the author, of when the story was set but also the literary context and the context of production and reception....

Passive transport Diffusion = occurs in gases or aqueous solutions whereby particles are free to move and spread from a higher concentration to a lower concentration. An example is air freshener being spr...