Chem Vocab Ch 5-8 Word Scramble
|
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Term | Definition |
significant figurea | the certain digits and the first uncertain digit of a measurement |
conversion factor | a ratio used to convert from one unit to another |
atomic mass unit (amu) | a small unit of mass equal to 1.66 x 10^-24 grams |
average atomic mass | the weighted average of the masses of all the isotopes of an element |
mole | the number equal to the number of carbon atoms in exactly 12 grams of pure 12 C: Avogadro's number. One mole represents 6.022 x 10^23 units |
avogadro's number | the numbers of atoms in exactly 12 grams of pure 12 C, equal to 6.022 x 10^23 |
molar mass | the mass in grams of 1 mole of the substance |
empirical formula | the formula of a compound expressing the smallest whole-number ration of atoms in a compound |
molecular formula | the actual formula of a compound giving the types of atoms and numbers of each type of atom |
chemical reaction | one or more substances are changed into one or more new substances by the reorginization of component atoms |
chemical equation | a representaion of a chemical reaction using the formulas of the starting substances that react and the the new substances that are formed |
reactant | the starting substance of a chemical reaction, shown to the left of the reaction arrow |
product | the new substance formed by a chemical reaction, shown to the right of the reaction arrow |
coeffiecient | the number written in front of the chemical formulas in a balance chemical equation- coefficients indicate the relative numbers of reactants and products in the reaction |
precipitation | the formation of a solid in a chemical reaction |
precipitate | the solid that forms in a precipitation reaction |
precipitation reaction | a reaction in which a solid forms and separates from the solution |
strong electrolyte | a substance that dissolves in water by dissociation completely into ions |
soluble solid | a solid that readily dissolves in water |
insoluble solid | a solid that dissolves to such a small degree that it is not detectable to the naked eye |
strong acid | an acid that completely dissociates to produce H+ ions in solution |
strong base | a basee that completely dissociates to produce OH- ions in solution |
oxidation reduction reaction | a chemical reaction involving the transfer of electrons |
double displacement reaction | AB + CD ---> AD + CB |
acid base reaction | involves H+ ion that ends up in the product water |
single replacement reaction | A + BC ---> B+AC |
combustion reaction | a chemical reaction involving oxygen as one of the reactants that produces enough heat so that a flame results |
synthesis (combination) reaction | a chemical reaction in which a compound is formed from simpler materials |
decomposition reaction | a chemical reaction in which a compound is broken down into simpler compounds, or into the component elements |
Created by:
briannaaa_vik
Popular Chemistry sets