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Mr V U5

Survey of Chemistry

TermDefinition
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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