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In order to solve this question we simply must substitute x=1 into f(x). But what is f(x)? What does it actually mean to make a subsitution? f(x) has a fancy name attached to it called a funct...
As you go down the group, what changes? The number of shells.
As you go down the group, what doesn't change? The number of electrons in the outer shell - it is always one.
For group 1, they ...
Two methods for simultaneous equations: making them equal to each or substitution. If they both have a common term, for example "y", then you can do substitution, otheriwise find a way to make t...
Ask the student: what other option is there? What are the differences between the two?
Answer: Humans have a small surface area to volume ratio, so diffusion alone is not enough to meet the high m...
There are three verbs in this sentence: se dépêcher, éviter and arriver. Se dépêcher is conjugated using the present simple tense because the action is currently happening. Eviter et arriver are both in t...
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