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The ABC s of chemistry

A. Activation Energythe energy that an atomic system must acquire before a chemical reaction can occur. B. Borona nonmetallic element occurring naturally only in combination. C. Chemical ChangeA change in a substance that involves the breaking and reforming of chemical bonds to make a new sub

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The ABC s of chemistry

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    1. The ABC’s of chemistry Johnathan Schnatz Mary Carr

    2. A Activation Energy the energy that an atomic system must acquire before a chemical reaction can occur

    3. B Boron a nonmetallic element occurring naturally only in combination

    4. C Chemical Change A change in a substance that involves the breaking and reforming of chemical bonds to make a new substance

    5. D Displacement The weight or the volume of fluid displaced by a floating or submerged object

    6. E Endothermic reaction A reaction in which more energy is required to break the bonds in reactants than is released from the formation of new bonds in the products

    7. F Formula An expression of the constituents of a compound by symbols and figures

    8. G Gas One of the three states of matter

    9. H Heat A flow of thermal energy from one object to another, due to temperature difference

    10. I Inhibitor A substance that decreases the rate of a chemical reaction

    11. J John Dalton British chemist whose pioneer work on the properties of gases led to his formulation of the atomic theory

    12. K Kinetic Energy Energy that comes from motion

    13. L Law of Conservation of Mass States that the total mass of products of a reaction is equal to the mass of the reactants

    14. M Matter Anything that has mass and takes up space

    15. N Neutrons An uncharged particle found in the nucleus of an atom

    16. O Orbital A wave function describing the state of a single electron in an atom

    17. P Periodic table A table that visually organizes the similarities of all known elements

    18. Q Quark Any of a group of six elementary particles having electric charges of a magnitude one-third or two-thirds that of the electron

    19. R Reactant A substance that enters into and is altered in the course of a chemical reaction

    20. S Solubility Refers to the amount of solute that can be dissolved in certain volume of solvent under certain conditions

    21. T Temperature The measurement used to quantify the sensations of hot and cold; it is related to the average kinetic energy of that object’s molecules

    22. U Uranium A white, lustrous, radioactive, metallic element having compounds that are used in photography and in coloring glass

    23. V Viscosity A measure of a material’s resistance to flow

    24. W William Crookes English chemist and physicist. He discovered the element thallium and the cathode ray

    25. X Exothermic reaction Occurs when less energy is required to break the bonds in reactants then is released when bonds are formed to make new products

    26. Y Yttrium A rare trivalent metallic element, found in gadolinite and other minerals.

    27. Z Enzymes Any of numerous proteins or conjugated proteins produced by living organisms and functioning as biochemical catalysts

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