Across
- 3. Energy associated with the random motion of atoms and molecules
- 5. A reaction that releases thermal energy as heat flows out of the system
- 6. Heat absorbed by the container is ___________
- 7. the value of the ΔH for any reaction that can be written in steps equals the sum of the values of ΔH for each of the individual steps
- 12. A change in the form of a substance, in which the chemical bonds are broken
- 16. A device used to measure enthalpy changes for chemical and physical reactions by measuring the change in heat using a thermometer.
- 19. A type of system where matter cannot leave, but energy can
- 20. Energy associated with the flow of electrons
- 21. A change in the chemical bonds between atoms, resulting in the rearrangement of atoms into new substances
- 23. A curve that represents an experiment in which it was determined that not all particles at a specific temperature had exactly the same velocity. Also known as the Kinetic Energy Distribution Curve
- 26. A type of system where matter and energy can enter or leave
- 27. A specially designed container in which changes in temperature can be measured, and is reinforced to withstand large forces from rapid expansion of hot gases from chemical reactions
- 28. Energy stored within the bonds of chemicals
- 30. Energy available in a system or object
- 34. The study of energy changes that accompany physical or chemical changes in matter
- 35. A reaction that absorbs thermal energy as heat flows into the system
- 37. A type of molar enthalpy change that involves a solid dissociating into ions
- 38. Dilute aqueous solutions assumed to have ____ and specific heat capacity of pure water 1g/mL and 4.18J(g×°C)
- 39. An equation to calculate the heat energy produced in a reaction
- 40. The capacity to do work
Down
- 1. The enthalpy change associated with a physical, chemical or nuclear change involving 1 mol of a substance
- 2. A set of reactants and products under study, usually represented by a chemical equation
- 4. Enthalpy change in a system _________ the quantity of heat (q) that flows from the system to the surroundings
- 7. The measure of the transfer of the thermal energy from one substance to another
- 8. Certain characteristics of a system that must be made when performing calorimetry
- 9. The technological process of measuring energy changes in a chemical system
- 10. Energy stored within the collection of neutrons and protons in the nucleus
- 11. The difference in enthalpies of reactants and products during a change.
- 13. A theory that states "In order for a chemical reaction to occur, the reacting particles (molecules and/or atoms) must collide with each other. If the particles do not collide, no reactions occur."
- 14. No heat is _________ transferred between calorimter and outside
- 15. A type of molar enthalpy change that involves multiple molecules bonding to form a new substance
- 17. The area of chemistry that deals with rates of reactions
- 18. Quantity of heat required to raise the temperature of a unit mass of a substance 1°C or 1K.
- 22. A type of molar enthalpy change that involves a substance changing state from liquid to gas
- 24. The measure of the average kinetic energy in a substance (measured in °C or K)
- 25. Collision frequency × fraction of effective collisions
- 29. A type of molar enthalpy change that involves a substance changing state from liquid to solid
- 31. A type of molar enthalpy change that involves an acid and base reaction together
- 32. A type of system where matter and energy cannot leave
- 33. A change in the protons or neutrons in an atom, resulting in the formation of new atoms
- 36. A type of molar enthalpy change that involves a substance being burned off in oxygen gas