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Grade 9 sci Chem

QuestionAnswer
Pure Substances They are made up of one type of particles and are a pure elements or compound
Physical Properties They are the physical properties of which a substance behaves
Alkaline metals they are very soft and don't occur in Nature
Alkaline Earth Metals They are very reactive and are not found freely in Nature
Halogens They are non metals and are most reactive
Noble Gases They have maximum electrons in there outer shell which make them stable. They are not a
Solution This is a Homogenous mixture or when there is a mixture and you can not see the other elements
Mechanical mixture it is a Heterogeneous where you can see the different parts of a mixture
Created by: lacrossegod99
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