# Green Chemistry - Principle 2 | Environmental Chemistry | Chemistry | FuseSchool

## More videos by this producer

### Animal Classification | Evolution | Biology | FuseSchool

All living things are grouped into 5 kingdoms. In this video we are going to look at the animal kingdom in more detail. There are thought to be over 7.5 million species of animal on planet Earth, of which 900,000 have been described. VISIT us at www.fuseschool.org, where all of our videos are care

### Adding & Subtracting Surds | Numbers | Maths | FuseSchool

In this video we are going to have a quick look at adding and subtracting surds. VISIT us at www.fuseschool.org, where all of our videos are carefully organised into topics and specific orders, and to see what else we have on offer. Comment, like and share with other learners. You can both ask and

### Expanding Square Brackets | Algebra | Maths | FuseSchool

In this video we’re going to have a look at how to expand squared brackets. You should already know how to expand double brackets by multiplying each term in the first bracket, by each term in the second bracket and then simplifying. EXAMPLE: (x - 4)(x + 3) = x^2 - 4x + 3x - 12 = x^2 - x - 12. For