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Changes in Matter

elements, atoms, chemical and physical changes, acids, bases

Atom smallest piece of an element
Electron part of an atom with a negative charge
Proton part of an atom with a postive charge
Neutron part of an atom with a neutral charge
Atomic number is the number of protons and electrons in an atom
Valence Electron outermost electrons that participate in chemical bonding
Chemical Reaction process where substances interact to create a new substance
Reactants starting substances in a chemical reaction
Products substances produced by a chemical reaction
Endothermic Reaction chemical reactions that absorb thermal energy
Exothermic Reaction chemical reactions that give off thermal energy
Qualitative Data words that describe an observation
Quantitative Data numbers describing an observation
Acid produces hyrdronium ions pH 0-6.5
Base produces hydroxide ions pH 7.5-14
pH measures the range of acids and bases 0-14
Neutral pH of 7 (water)
Density mass divided by volume
Created by: Mr.SwimTPA