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Science

Grade 9

QuestionAnswer
Formula for Density is D = m/V
Formula for Mass is M = D x V
Formula for Volume is V = m/D
Physical Change is A change that does not change the substance or make a new one
Evidence of physical change is - Change in size or shape - Change in colour - Changes in state
Chemical Change is A change in the starting substance and the production of one or more new substances
Evidence of chemical change is - Change in colour - Change in odour - Gas bubbles - A new solid - Change in temperature or light *2 of the clues should be present to prove it is chemical change
A physical property is characteristics that can be observed (using our senses) without changing the substance into another substance
Examples of physical properties - Colour - Odour - Taste - Texture - Lustre (shiny or dull) - Clarity (transparent, translucent, opaque) - Physical state - Melting and boiling points - Hardness - Malleability - Brittleness - Ductility - Solubility - Viscosity
A chemical property is Observations when a substance reacts (or doesn't) with another substance
A quantitative physical property is A description using numbers
A qualitative physical property is A description using your 5 senses
Matter is split into Mixtures and Pure Substances
Mixtures are
Created by: oconsoli1010
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