Resources by Catalyst
Displaying 481 - 490 of 569
Testing New Medicines *suitable for home teaching*
A Catalyst article exploring the testing of new medicines to see if they are safe for people to take. The effects on cells of a potential new drug are investigated using tissue cultures of human or animal cells. Some tissue cultures use fresh tissue samples, but most come from well-established laboratory cell...
The bizarre world of high pressure chemistry
This Catalyst article investigates high pressure chemistry and discovers that, when put under extreme pressure, the properties of a material may change dramatically.
This article is from Catalyst: Secondary Science Review 2016, Volume 27, Issue 1.
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The brain and crime
This Catalyst article looks at research suggesting that the social world influences the activity of human genes, in turn affecting brain function. Neuroscientists are now beginning to explore how the brain might be linked to certain...
The Chemistry of the Noble Gases *suitable for home teaching*
This Catalyst article looks at the noble gases (Group 0 or 8 in the periodic table) which are almost inert. This article shows how they were discovered through the use of fractional distillation and looks at their chemical and physical properties.
This article is from Catalyst: GCSE Science Review 2011,...
The Dolls of Confusion
This Catalyst article investigates how humans can misjudge the weights of small dense objects and large, light objects and how their perception of weight is easily fooled.
The article is from Catalyst: Secondary Science Review 2014, Volume 24, Issue 3.
The Ebola Outbreak
This Catalyst article investigates the Ebola outbreak. Defeating the outbreak of the viral disease Ebola in 2014-15 required great medical effort. Antidotes and vaccines are under development.
The article is from Catalyst: Secondary Science Review 2015, Volume 26, Issue 1.
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The Ethical Maze
A Catalyst article about deciding right from wrong in biology. Modern science raises many ethical questions. How these questions can be answered either ethically or by coming to a personal decision is discussed. How ethical frameworks can be used to address ethical questions is applied to the case of genetically...
The healing of the ozone layer
This Catalyst article investigates the healing of the ozone layer. The ozone layer in the upper atmosphere was damaged by CFCs, used in refrigeration. A ban on their use has allowed the layer to start recovering.
This article is from Catalyst: Secondary Science Review 2016, Volume 27, Issue 1.
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The Kilogram
This Catalyst article looks at the changing definition of the kilogram, a unit of mass and a base unit in the SI system (the International System of units). It has been found that the International Prototype Kilogram (IPK), made in 1879 and kept in a vault in Paris, has lost about 50microgrammes of mass over the...
The Landing - Philae Touches Down
This Catalyst article investigates the launch of the the Philae lander from the Rosetta spacecraft and its landing on Comet 67P.
The article is from Catalyst: Secondary Science Review 2014, Volume 25, Issue 3.
Catalyst is a science...