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12 Cards in this Set
- Front
- Back
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what is the particle theory? |
1) all matter is made up of tiny particles that have empty spaces between them 2) different substances are made up of different particles 3) particles are in constant random motion 4) the particles of a substance move faster when it's temperature increases 5) particles attract each other |
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what is the definition of physical property |
properties which can be observed using our 5 senses (smell, touch, taste, see and hear)2) |
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what is the definition of chemical property? |
properties which describe the behaviour of matter when it reacts with other substances to form new substances |
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what is qualitative |
a description of matter using only words |
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what is quantitative |
a description of matter using only numbers |
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what are the physical properties? |
state - solid/liquid/gas hardness - how resistant it is to breaking conductivity - ability to conduct electricity form texture clarity - translucent, transparent, opaque lustre - shiny or dull solubility - how easily it devolves in liquids viscosity - thickness density - amount of mass in a certain volume melting point boiling point taste odour colour |
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define solid, liquid and gas |
Solid: tightly packed together, very little movement, definite shape and volume
Liquid: less close together, move freely, definite volume but takes the shape of its container
Gas: widely spread, movie quickly and freely, no fixed shape or volume so it takes the shape and volume of container |
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what is melting? |
solid to liquid. heat is added |
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what is freezing |
liquid to solid heat is taken |
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what is evaporation |
liquid to gas eat is added |
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what is condensation |
gas to liquid heat is taken |
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what is sublimation |
solid to gas or gas to solid |
