Stoichiometry Crossword

4. the lowest whole number ratio of ions represented in an ionic compound
5. tells you by mass what percent of each element is present in a compound
8. a process in which reactants react chemically and convert into products by chemical transformation
11. an atom or group of atoms in which the number of electrons is different from the number of protons
13. the chemical formula that gives the total number of atoms of each element in each molecule of a substance
15. a ratio (or fraction) that represents the relationship between two different units and is always equal to 1
16. the mass equivalent of Avogadro's number of atoms of an element; mass per mole

1. the numerical relationship between the quantities of reacting substances that corresponds to the laws of stoichiometry.
2. substances that are made up of only one kind of particle and have a fixed or constant structure
3. uses the relationship between reactants and products in a chemical reaction to determine quantitative data
6. the chemical formula of a compound that gives the simplest ratio of elements in a compound rather than the total number of atoms in the molecule
7. scientific unit that measures the mass of a substance (has a value of 6.023 x 10 )
9. a compound that absorbs water molecules from its environment and includes them as part of its structure
10. basic building block of chemistry; the smallest part of a substance that cannot be broken down chemically
12. reaction an equation where the number of atoms of each type in the reaction is the same on both the reactant and product sides
14. number of units in one mole of any substance (defined as its molecular weight in grams), equal to 6.023 × 10