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Science
Properties and Changes of Matter
| Term | Definition |
|---|---|
| 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
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