Across
- 1. The mass of a mole of atoms of an element
- 4. The reaction that occurs when heat is applied to a compound, causing it to breakdown into its different chemical constituents
- 5. The splitting of an ionic compound using electricity. The electric current is passed through a substance, causing chemical reactions at the electrodes and the decomposition of the materials.
- 6. The reactant that is completely used up since it limits the amount of products formed
- 7. A reaction involving the loss of oxygen. Reduction is the gain of electrons.
- 9. The amount of the product that comes from a chemical reaction
- 13. The difference between the sum of the energy needed to break bonds and the reactants and the sum of the energy released when bonds and the product of our is called the ___________ of the reaction
- 15. A chemical reaction would be more reactive element displaces, a less reactive element from its compound
- 16. The formula that shows the actual number of atoms in each element in one molecule of a substance
- 23. The law of conservation of mass states that no atoms are lost or made during the chemical reaction; the mass of the products equals the mass of the reactants
- 24. In an exothermic reaction, the energy release from forming new bonds is greater than the energy needed to _________ existing bonds
- 25. The positive terminal
- 26. The mass of a molecule of a substance; for example, a molecule of sodium chloride, NaCl, has a relative formula mass of 58.5; one mole of sodium chloride has a mass of 58.5 grams
- 27. How quickly a reaction occurs
- 28. A reaction that releases heat
- 31. In an endothermic reaction, the energy energy needed to break existing bonds is ____________ then the energy release from forming new bonds
- 32. A state where the rates of forward and reverse reactions are equal
- 33. The minimum energy needed for a reaction to start. The energy needed for particles to collide in order for a successful reaction to occur.
- 34. The maximum amount of products that could be produced from the given reactants, assuming a complete reaction takes place
- 36. Metals less reactive than carbon can be extracted from their oxides by reduction with carbon
- 37. A process by which substances are changed into new substances
Down
- 2. The equal volumes of all gases taken at the same temperature and pressure must contain the same number of molecules
- 3. The amount of a substance actually made in a chemical reaction
- 8. A reaction involving gain of oxygen. Oxidation is the loss of electrons.
- 10. The water in crystals that contain molecules of water bound up in the crystal structure
- 11. yield The amount of a substance predicted to be made from a chemical reaction
- 12. The formula that shows the simplest ratio of the atoms present
- 14. The reaction when an acid and a bass react to form water and salt
- 17. Reaction profiles can be used to show the relative energies of reactants and products, the activation energy, and the overall energy change of reaction
- 18. A reaction that absorbs heat
- 19. The actual yield from a chemical reaction divided by the predicted yield 10 times by 100
- 20. The reaction that occurs when heat is applied to a compound, causing it to break down into its different chemical constituents
- 21. Metals are arranged in order of their reactivity in a reactivity series. This can be used to predict products from reactions.
- 22. A unit for the amount of a substance; approximately 6×10 to the 23rd exponent particles
- 29. The negative terminal
- 30. A principal describing how equilibrium shifts and response to changes and conditions
- 35. The substance formed from a chemical reaction