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Prop of Matter-2
Poperties of Matter (Part 2 of 2)
| Term | Definition |
|---|---|
| ACID | A substance Forms a sour solution in water Has a pH of less than 7 High concentration of Hydrogen ions Litmus dye color turns to red |
| BASE | A substance In water forms a bitter taste and slippery feel Has a pH of more than 7 Litmus dye color turns to blue i.e., Baking Soda |
| CHEMICAL CHANGE | Change in substance Chemical makeup changes permanently Becomes new substance i.e., Tree Leaves--when their color changes it does not change back |
| CHEMICAL Properties of Matter | Combustion (burning); Corrosion (/destruction of metals) Fermentation (/yeast changes sugar into alcohol & produce carbon dioxide) Metabolism (chemical reactions inside an organism) Oxidation (i Iron combines with oxygen form rust if moisture present) |
| CONDUCTIVITY | Measure of how easily electrons flow Produces heat, electricity, sound or other forms of energy |
| DENSITY | a “physical property” (Mass ./. Volume) -- Mass of a given substance or object Divided by the Volume i.e., Oil and vinegar salad dressing – Oil floats on the vinegar water mixture, AND the solids sink to the bottom |
| NEUTRAL | Solutions with a pH value of 7 Neither an acid or base (alkaline) i.e., pure water |
| pH SCALE | Measure of the acid or alkaline (base) of a solution Based on a scale of 0-14 |
| PHYSICAL CHANGE | Changes in size, color Changes in the “state of matter” (solid, liquid, gas) Without changing the composition “NO” new substance |
| PHYSICAL Properties of Matter | Conductivity (power of handling heat, electricity, sound or other energy forms) Density (mass •/• volume) Hardness (resistance to bend or scratch i.e., Mohs Scale) Malleability (hammered/pressed in different shapes; i.e., gold, copper) |
| MOHS Scale | a scale that describes the scratch resistance of various minerals; ability of harder material able to scratch a softer material. |
Created by:
pj johnson
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