Across
- 3. The idea that reacts must meet with sufficient energy to break old bonds for a reaction to occur is referred to as “_______ theory”
- 5. A ____ bond, also known as ‘the sea of electrons’ is the attraction between a cation and the free electrons it shed.
- 10. The _two_words_ is the energy absorbed when a bond is broken or released when that bond forms
- 14. The _____ energy of a solid is the energy needed to break apart its geometric structure.
- 15. A reaction’s ‘_two_words_’ describes the relationship between the concentration of each reactant and its effect on reaction rate
- 16. When molten iron is added to ice, the system will eventually reach thermal ____ where all particles have the same average kinetic energy
- 17. In a reaction, the slowest, or ‘rate determining’ step is the one with the highest _____ energy
- 18. Because temperature represents _______ kinetic energy, even at low temperatures there may be enough energy to trigger a reaction of change of state, for a small number of particles.
- 19. Electronegativity _________ as we move left on the periodic table, with fewer protons
- 21. If the bond energy of product is HIGHER than the bond energy of reactants, the reaction will be ______
- 23. The heat ____ of a substance is the measure of the energy needed to increase its temperature. It is lower in tightly packed, rigid, geometric substances.
- 24. Technique used to identify the isotopes of and element and their abundance. Show the mass and percentage of each isotope. (Two words)
- 25. A ___ is identifiable in a reaction mechanism because it is unchanged at the beginning and end of the reaction
- 26. When the electrons in two possible lewis structures are actually existing in both arrangements simultaneously
Down
- 1. When the electrons involved in bonding ‘blend together’ the S, P, and D orbitals, corresponding to SP2, SP3, or even SP3D
- 2. The standard ____ of formation is the energy released or absorbed when a compound forms from its substituent elements. Elements have a value of zero in their standard state.
- 4. A ______ order reaction will have a straight line graph for 1/conc.
- 6. A _____ bond is when the valence- in nonmetals or metalloid are overlapped, allowing both atoms to fill their valence shell without losing electrons
- 7. Each peak in a PES represents a _______, with the height proportional to the number of electrons.
- 8. The defining principle of this class. The attraction and repulsion of charged particles is proportional to the charges, and inversely proportional to the square of the distance. _______’s Law
- 9. The bond ______ of a covalent bond is the ‘sweet spot’ where the repulsion of the nuclei is balanced by the attraction of the protons for the opposite e- cloud
- 11. A ____ bond is when one atom donates a lone pair to form the bond.
- 12. Atomic radius _______ as we go down a group, adding more shells
- 13. The breakdown of the proportions of the elements in a compound, which will tell you the empirical formula of the compound. (Two words)
- 20. Heat of vaporization tends to be much greater than heat of fusion because evaporation overcomes much greater forces of _____ between particles.
- 22. If a metal and another substance have similar size atoms, they will form a _______ alloy