In this activity students discover how a Tanzanian initiative reduced iodine deficiency diseases, and look at lessons the UK can learn from the example of this African nation. According to recent reports, up to 70% of British young people do not take in enough iodine. Iodine deficiency causes goiter and brain...

This article from Catalyst looks at ionic liquids which are a developing area in chemistry. Ionic liquids are liquids which have the potential to provide greener ways of carrying out chemical processes.

The article is from Catalyst: Secondary Science Review 2014, Volume 25, Issue 2.

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These diagnostic questions and response activities (contained in the zip file) support students in being able to:

• Interpret an ionic formula as representing the ratio of ions.
• Recognise the limitations of what is represented by a dot and cross diagram.
• Recognise the uses and...

These diagnostic questions and response activities (contained in the zip file) support students in being able to:

• Describe the difference between radioactive particles and radiation.
• Describe what happens when radiation causes ionisation.  
• Explain why ionising radiation does not make...

A Catalyst article about iron, a relatively abundant element that humans have made widespread use of since the Iron Age (about 750 BC). The article explores the extraction of iron ore, the chemistry of iron and the blast furnace process.

This article is from Catalyst: GCSE Science Review 2006, Volume 16,...

This Catalyst article looks into Alzheimer’s disease which affects around 465 000 people in the UK, with the number of sufferers is growing as the population ages. It is a form of dementia that causes cell death in the brain and leads to memory loss and mood swings. The article investigates whether the presence of...

This Cre8ate maths activity provides an opportunity for work on inverse proportion, conversion calculations, compound percentage change and information handling skills.

This activity from Science upd8 is linked to the subject of the universe which seems just too perfect! Everything about it seems tailor-made to make sure humans would evolve.

Could an advanced civilization have "fixed it" for us? Some top scientists think it's a serious possibility. In this discussion...

A Catalyst article explaining how new data suggests that it is very unlikely that life ever existed on Mars. When the presence of water was confirmed a few years ago, there was a lot of speculation that at least simple life forms had once lived there as water is essential for every known living organism. The latest...

This activity, from the Institution of Engineering and Technology (IET), requires students to find as many advantages and disadvantages relating to remote or robotic surgery as possible.

It is intended that students...

A Catalyst article examining if there are harmful chemicals in farmed fish. Oily fish such as salmon, tuna, sardines and mackerel contain plenty of protein, vitamins and the right sort of fats. They are rich in omega-3 fatty acids which are released when fats are digested. The human body uses these fatty acids to...

A Catalyst article about the Kepler spacecraft, which is used to look for extra-solar planets. Scientists are hoping to shine light on the age old question of life’s existence elsewhere in the Universe using a new space-based telescope named Kepler. Launched on 6 March 2009, Kepler is searching the sky for small,...