Across
- 2. 1 mol of gas at STP and is 22.4 L/mol for any ideal gas.
- 3. 6.02 x 1023 representative particles of a substance.
- 5. A chemical change in which an element or a compound reacts with oxygen.
- 6. Contains a large amount of solute.
- 8. The ratio of the volumes of solute to solution.
- 9. A chemical change in which two or more substances react to form a single new substance.
- 11. The species present in a substance, usually atoms, molecules, or formula units.
- 15. The speed at which reactants become products.
- 16. Reactions that absorb net energy from the surroundings.
- 18. A measure of the amount of solute that is dissolved in a given quantity of solvent.
- 19. Substances present after a reaction.
- 20. The energy stored in the chemical bonds of a substance.
- 21. A chemical change involving an exchange of positive ions between two compounds.
- 22. The number of moles of solute dissolved in 1 liter of solution.
- 24. The ratio of the mass of a substance to its volume.
- 26. Same as its experimentally-determined empirical formula, or it is a simple whole number multiple of its empirical formula.
- 27. A compound contains its component elements in a fixed ratio by mass.
- 28. The lowest whole-number ratio of the atoms or moles of elements in a compound.
- 29. The ratio of the masses of the solute and solution.
- 30. A chemical equation that does not indicate the relative amounts of the reactants and products.
- 32. A compound composed of hydrogen and carbon.
- 33. 6.02 x 1023
- 34. Lists the relative reactivities of elements within groups, such as metals and halogens.
- 35. A solution with a small amount of a solute.
Down
- 1. The percent by mass of each element in the compound.
- 3. The mass of 1 mol of a substance expressed in units of g/mol.
- 4. A chemical change in which one element replaces a second element in a compound.
- 7. Bonds are broken when molecules collide with enough energy.
- 10. For a typical chemical reaction, energy is neither created nor destroyed.
- 12. Substances present before a reaction.
- 13. Any sample of a compound will be made up of the same elements in the same ratio.
- 14. A chemical change in which a single compound breaks down into two or more products.
- 17. Reactions that release net energy into the surroundings.
- 23. For a typical chemical reaction, the mass of the products is always equal to the mass of the reactants.
- 25. Any two samples of gas with an equal number of particles will have the same volume when they are held at the same pressure and temperature.
- 31. The numbers in front of terms used to balance and equation so it obeys the las of conservation of mass.