Hope this will help you abit!
Posted by Mr. Ricky Tsui | Posted in Integrated science | Posted on 11/06/2015
Parts that you may be interested in: (Source: Howstuffworks)
Keyword(s): burn, energy, energy change, energy convertor, fuel, light bulb, motor, steam engine, generator
Posted by Mr. Ricky Tsui | Posted in Chemistry, Integrated science | Posted on 08/05/2015
Reaction with cold water
Reaction with air (burning)
Keyword(s): air, calcium, calcium hydroxide, calcium oxide,cold water, hydrogen gas, magnesium,magnesium hydroxide, magnesium oxide,metal, metal hydroxide, metal reactivity series,oxide, oxygen, reaction of metal
Posted by Mr. Ricky Tsui | Posted in Chemistry, Integrated science | Posted on 20/04/2015
Filtration is commonly used to remove insoluble impurities from a mixture.
In filter column, we often put small and fine substance on TOP (e.g. sand, activated carbon powder) and put large substances at BOTTOM (e.g. rocks, stones), WHY?:)
Keyword(s): filter column, filtration, particle size, water purification