Before you start revising for the Required Practicals in Chemistry, which includes investigating temperature changes in chemical reactions, check out these temperature facts!
Scientists use Kelvin to measure temperatures in space because it is so cold. A temperature scale is needed which is based on the idea of absolute zero. This is the coldest theoretical temperature, where particles have no energy, and do not move. Therefore they are unable to transfer heat. 0 Kelvin is equivalent to -274 degrees Celsius, or in other words, extremely cold!! There are areas in space where there are no gas particles, no movement at all, where the temperature would be 0 Kelvin. However, if you bumped into a supernova, temperatures could increase to 3.500,000,000 Kelvin! To put this in perspective, the surface temperature of the Sun is around 5800 Kelvin.
Even on Earth, temperatures can vary enormously. In 2020 the highest temperature reliably recorded was 54.4 °C in Death Valley National Park, California. Whereas the coldest spot on Earth, with the lowest recorded temperature of -89.2 °C is in Antarctica.
Making Salts, Electrolysis and Temperature Changes.
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