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Science

Properties and Changes of Matter

TermDefinition
Physical Properties A description that helps identify a substance
State of Matter solid, liquid, gas
Colour red, orange, yellow, green
What colour is water? colourless
Odour sharp, spicy, putrid
Pure water is (smell) odourless
taste sweet, sour, bitter, salty
Clairty how well you can see through a substance
Lustre shininess of and object/substance
hardness how hard an object is
texture how it feels to the touch
malleability how flexible and object/substance is
ductility the ability of an object or substance to be stretched into wire
viscosity the amount of ease a liquid has to flow
conductivity how well it conducts heat or electricity (good or poor)
Pure substances have...? Unique Densities
Quantitative Physical Properties characteristics observed with the senses, that are described but not measured.
Quantitative Physical Properties characteristics that are measured.
Quantitative always have..? a number and a unit
Density the ratio of mass over volume
Solubility how much it will dissolve into a liquid
What is the formula for Density? M/V
what is the formula for mass? DxV
what is the formula for volume? M/D
Characteristic Physical Property a unique physical property used to positively identify a substance.
Chemical Properties describes how a substance reacts with another.
Physical Changes...? Can be reversed
Physical Changes do not...? form any new substances
Chemical Changes...? are not easily reversed
Chemical Changes DO...? form new substances
Indicator of a Chemical Change: (c) colour (changes)
Indicator of a Chemical Change: ( t ) temperature (increases, decreases)
Indicator of a Chemical Change: ( o ) odour (changes)
Indicator of a Chemical Change: ( g ) gas (is produced)
Indicator of a Chemical Change: ( p ) precipitate (is formed)
Indicator of a Chemical Change: ( l ) light (is produced)
Indicator of a Chemical Change: ( u ) used up (reactants are used up)
Matter is classified as...? Mixtures and Pure substances
Mixtures are classified as...? Heterogeneous and Homogeneous
Heterogeneous Mixtures two or more phases
Homogeneous mixtures One phase
Phase basically a substance
Mixtures can be separated by..? physical means
Pure substances are classified as..? elements and compunds
elements are represented by..? chemical symbols
elements are made of? atoms
Elements can not be..? broken down any further
Compounds are represented by..? chemical formulas (H20)
compounds are made of..? molecules
Molecules can be broken down into..? atoms
Compounds can be broken down through..? Chemical Means
All matter is made up of what? particles
Each substance has its own..? unique particles
particles are always ______ to eachother. attracted
particles are always..? moving.
particles at a higher temperature will..? move at a faster speed than those of a lower temperature.
Created by: gogoasa