Across
- 2. The weighted average of the atomic masses of an element's naturally occurring isotopes.
- 3. A pure substance formed when two or more distinct elements combine chemically in a fixed ratio by mass.
- 5. Equal volumes of all gases under identical conditions of temperature and pressure contain an equal number of molecules.
- 6. The closeness of multiple measurements of the same quantity to one another.
- 10. A mixture whose components are completely uniform throughout, with no visible boundaries of separation.
- 11. A pure chemical substance consisting of only one type of atom that cannot be decomposed into simpler substances by ordinary chemical methods.
- 16. Matter can neither be created nor destroyed in a chemical reaction.
- 17. The agreement of a particular value to the true, accepted value of the quantity.
- 18. The numerical coefficients placed before chemical formulae in a balanced equation representing mole ratios of participants.
- 25. A given chemical compound always contains exactly the same proportion of elements by mass, regardless of its source or method of preparation.
- 26. The sum of the atomic masses of all the atoms present in a covalent molecule.
- 27. A mixture with non-uniform composition and distinct phases separated by visible boundaries.
- 28. The sum of atomic masses of all atoms present in a formula unit of an ionic compound.
Down
- 1. When gases combine or are produced in a chemical reaction, they do so in a simple ratio by volume, provided all gases are measured at identical temperature and pressure.
- 4. The reactant that remains unreacted after the limiting reagent has been entirely consumed.
- 7. If two elements combine to form more than one compound, the masses of one element that combine with a fixed mass of the other element are in a ratio of small whole numbers.
- 8. The number of moles of solute dissolved in one litre of solution.
- 9. The SI base unit for the amount of substance..
- 12. The number of moles of solute dissolved per kilogram of solvent.
- 13. The dimensionless ratio of the number of moles of a specific component to the total number of moles of all components present in the mixture.
- 14. Mass The mass of one mole of a substance expressed in grams per mole.
- 15. The volume occupied by one mole of an ideal gas at Standard Temperature and Pressure.
- 19. The reactant that is completely consumed first in a reaction, thereby capping and determining the theoretical yield of products.
- 20. Anything that possesses mass and occupies space.
- 21. Exactly 1/12th of the mass of one carbon-12 atom.
- 22. The quantitative relationship between the amounts of reactants consumed and products formed in a balanced chemical equation.
- 23. The defined numerical value 6.022 X 10^{23}.
- 24. Meaningful digits in a measured or calculated quantity known with certainty, plus one final digit that is estimated or uncertain.