Aidsmap5 年
What does ‘reactive’ mean when testing for HIV?
£35 means we can empower more people living with HIV to challenge stigma with our information workshops, videos and broadcasts. If you have been tested for HIV infection, you may be told that the ...
Aidsmap5 年
What does ‘non-reactive’ mean when testing for HIV?
£35 means we can empower more people living with HIV to challenge stigma with our information workshops, videos and broadcasts. If you have been tested for HIV infection, you may be told that the ...
BBC3 年
Introduction to displacement reactions
The word displace means to push out. A more reactive element can displace a less reactive element out of its compound during a chemical reaction. Displacement reactions can be used to investigate ...
BBC2 年
Making a reactivity series
The reaction of a metal with acids gets faster the more reactive it is Platinum to copper are very unreactive metals, so don’t normally react with acids. This means they are placed at the bottom ...