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Matter and Life
Chemistry CH1 Matter and Life
| Term | Answer |
|---|---|
| Matter | anything that has mass and takes up space |
| Physical Change | does not alter the chemical makeup of a substance (breaking, mp, bp, fp) |
| Chemical Property | the ability of a substance to change into a different substance |
| Chemical Change | alters the chemical makeup of a substance (digestion, growth, burning or rotting of food). Involves a chemical reaction |
| States of Matter | Solid: has a defined shape and volume independent of its container. Liquid: has a defined volume but a variable shape that depends on its container. Gas: no defined shape or volume, has a variable shape and volume that depends on its container. |
| Intensive Properties | do not depend on the amount of the substance (melting pt., boiling pt., density) |
| Pure | can be either an element (Oxygen, Sulfur) like pure metals (Gold) or a compound like salt or water. always the same composition and properties |
| Mixture | can be homogeneous (same throughout, one phase) or heterogeneous (not the same throughout, many phases) (seawater, mayo, rocks) |
| Extensive Properties | dependent on the amount of a substance (mass and volume) |
| Atomic Mass | sum of the # of protons and neutrons in an element |
| Atomic Number | the # of protons in an element |
| Metal | solid at room temp., have a lustrous appearance, are good conductors of heat and electricity and are malleable |
| Nonmetal | brittle nature, nonconductors of heat and electricity |
| metalloids | elements that have properties similar to both metals and nonmetals |
| physical property | any aspect of an object or substance that can be measured or perceived without changing its identity (melting point, boiling point, density) |
| chemical compound | a substance that can be broken down into simpler substances |
| element | a substance that cannot be broken down chemically into simpler substances |
| Hydrogen | H |
| Carbon | C |
| Nitrogen | N |
| Oxygen | O |
| Flourine | F |
| Sodium | Na |
| Magnesium | Mg |
| Phosphorous | P |
| Sulfur | S |
| Chlorine | Cl |
| Potassium | K |
| Calcium | Ca |
| Iron | Fe |
| Bromine | Br |
| Silver | Ag |
| Iodine | I |
| Gold | Au |
| Mercury | Hg |
| Reactant | a substance that undergoes change in a chemical reaction |
| Product | a substance formes as a result of a chemical reaction |
Created by:
hugheslm
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