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Mr V U5
Survey of Chemistry
| Term | Definition |
|---|---|
| ELEMENT | A PURE SUBSTANCE THAT CANNOT BE BROKEN DOWN INTO OTHER SUBSTANCES BY CHEMICAL OR PHYSICAL MEANS. |
| ATOM | THE BASIC PARTICLE FROM WHICH ALL ELEMENTS ARE MADE; THE SMALLEST PARTICLE OF AN ELEMENT THAT HAS THE PROPERTIES OF THAT ELEMENT. |
| PROTON | SMALL, POSITIVELY CHARGED PARTICLES THAT ARE FOUND IN THE NUCLEUS OF AN ATOM. |
| NEUTRON | A SMALL PARTICLE IN THE NUCLEUS OF THE ATOM WITH NO ELECTRICAL CHARGE. |
| ELECTRON | A TINY, NEGATIVELY CHARGED PARTICLE THAT CANNOT BE BROKEN DOWN INTO OTHER SUBSTANCES BY CHEMICAL OR PHYSICAL MEANS. |
| CHEMICAL BOND | THE FORCE OF ATTRACTION THAT HOLDS TWO ATOMS TOGETHER. |
| MOLECULE | A NEUTRAL GROUP OF TWO OR MORE ATOMS HELD TOGETHER BY COVALENT BONDS. |
| COMPOUND | A SUBSTANCE MADE OF TWO OR MORE ELEMENTS CHEMICALLY COMBINED IN A SPECIFIC RATIO, OR PROPORTION. |
| PHYSICAL CHANGE | A CHANGE THAT ALTERS THE FORM OR APPEARANCE OF A MATERIAL BUT DOES NOT MAKE THE MATERIAL INTO ANOTHER SUBSTANCE. |
| CHEMICAL CHANGE | A CHANGE IN WHICH ONE OR MORE SUBSTANCES COMBINE OR BREAK APART TO FORM NEW SUBSTANCES. |
| REACTANT | A SUBSTANCE THAT ENTERS INTO A CHEMICAL REACTION. |
| PRODUCT | A SUBSTANCE FORMED AS A RESULT OF A CHEMICAL REACTION. |
| EXOTHERMIC REACTION | A REACTION THAT RELEASES ENERGY, USUALLY IN THE FORM OF HEAT. |
| ENDOTHERMIC REACTION | A REACTION THAT ABSORBS ENERGY. |
| CHEMICAL EQUATION | A SHORT, EASY WAY TO SHOW A CHEMICAL REACTION, USING SYMBOLS. |
| COEFFICIENT | A NUMBER IN FRONT OF A CHEMICAL FORMULA IN AN EQUATION THAT INDICATES HOW MANY MOLECULES OR ATOMS OF EACH REACTANT AND PRODUCT ARE INVOLVED IN A REACTION. |
| SURFACE TENSION | THE RESULT OF AN INWARD PULL AMONG THE MOLECULES OF A LIQUID THAT BRINGS THE MOLECULES ON THE SURFACE CLOSER TOGETHER; CAUSES THE SURFACE TO ACT AS IF IT HAS A THIN SKIN. |
| SOLVENT | THE PART OF A SOLUTION THAT IS USUALLY PRESENT IN THE LARGEST AMOUNT AND DISSOLVES A SOLUTE. |
| SPECIFIC HEAT | THE AMOUNT OF HEAT REQUIRED TO RAISE THE TEMPERATURE OF 1 KILOGRAM OF A MATERIAL BY 1 KELVIN, WHICH IS EQUIVALENT TO 1 DEGREE CELSIUS. |
| EVAPORATION | THE PROCESS BY WHICH MOLECULES AT THE SURFAC OF A LIQUID ABSORB ENOUGH ENERGY TO CHANGE TO A GAS. |
| CONDENSATION | THE CHANGE IN STATE FROM A GAS TO A LIQUID. |
Created by:
dougteach65
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