study stack123 Word Scramble
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Question | Answer |
chemistry | the study of matter |
atoms | smallest piece of of a element |
nucleus | center of a atom |
proton | positive part of a atom |
atomic mass | protons+nuetrons |
atomic theory | what scientists think about atoms |
element | a substance that contains 1 kind of atom |
periodic table of elements | the classification system that organizes elements based on the atomic numbers and groups then into the rows and columns based on their chemical and physical pproperties |
Mendeleeve | invented periodic table |
chemical symbol | abbreviation for name of element |
molecules | atoms held together by chemical forces |
covalent bond | a bond that occurs when atoms share pairs of electrons |
acid | a compound that forms hydrogen ions when dissolved in water |
base | a compound that forms hydroxide ions when dissolved in water |
pH scale | determines the concentration of or the amount of acids and bases in a solution |
indicators | a substance that changes color when exposed to acid or base solutions |
neutralize | when acid and bases come in contact with another |
salt | a compound that forms after a base and acid combine |
atomic number | the number of protons in a nucleus (also the same as the number of electrons) |
chemical reaction | a joining of different types of atoms to form new substances |
compounds | a substance formed when 2 or more different elements join together chemically |
the Bohr model | based on how atoms act, is a model of the rings of an atom |
Created by:
joshfox
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