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Properties of Metals

In this post, we’ll look at some common properties of metals, and explain the chemistry reason behind them. These properties include why pure metals are soft, why they are good conductors of electricity, and why they have relatively high melting and boiling point.

Separation Techniques

In Chemistry, separation techniques are methods used to separate and purify components from a mixture. Some common separation techniques include: filtration, chromatography, distillation, crystallization,

Correlation and Linear Regression

In this post, we’ll look at correlation and linear regression as tested in H2 A Level Math section on statistics. Here, you’ll what is correlation, regression, product moment correlation coefficient (r), how to use the graphic calculator Ti84 to do a least square regression.


In this post, we’ll look at common concepts tested in sampling for H2 A Level Math, which include types of samples, central limit theorem, … …

Binomial Distribution

A binomial distribution is a probability distribution that describes the number of successes in a given number of independent trials. The conditions needed for a…

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