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Chemistry

QuestionAnswer
An indicator is a chemical which: changes colour in acids and alkalis.
The PH scale is used to: describe how strong an acid or basic substance is.
Define Soluble: Can be dissolved
Define Insoluble: Can't be dissolved
All nitrates are: Soluble
All sodium and potassium compounds are: Soluble
All Chlorides are: Soluble
Silver, calcium, barium and lead sulfate are: Insoluble
All carbonates are: Insoluble
Metal reacts with oxygen forming: metal oxide (corrosion)
what can metal oxide do to an metallic element: eat it away
what is stainless steel: an alloy
can stainless steel rust?: no
what can steel be protected by to prevent rusting?: oil,paint or plastic
if a steel object is scratched what will happen?: it will rust
what is decomposing?: the rotting of a plant or animals caused by Bactria and air
Created by: mikaela555
 

 



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