An equal’s sign means two expressions are equal to

one another. But sometimes the expressions are not equal
… we
might only know that something is bigger than or smaller than somethi
ng else…
this is...

CREDITS

Animation & Design: Jean-Pierre
Louw
Narration: Luc
y Billings
Script

: Lucy Billings

An equal’s sign means two
expressions are equal to
one another. But sometimes the...

This video is the second lecture presentation on force and extension experiments. The presenter analyzes the results obtained from the previous presentation on the extension of a spring versus the force applied to it. The video goes on...

The video discusses a required practical activity from the chemistry specification, which is an experiment to investigate how increasing the concentration of a reactant affects the rate of the reaction by observing a precipitate. The...

This video explains how to calculate the rate of reaction - step-by-step.



In this video we cover the
following:
- How to measure the average rat
e of a reaction
- How to measure the average rate of a re
action using a...

Physicist Geoffrey West has found that simple, mathematical laws govern the properties of cities -- that wealth, crime rate, walking speed and many other aspects of a city can be deduced from a single number: the city's population. In...

This video explains the relationship between light intensity and photosynthesis in plants. The concept of direct proportionality and a linear relationship between light intensity and photosynthesis rate is discussed. The video then goes...