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Mrs.Irving's Bio
Chapter 3 terms Part 1
Term | Definition |
---|---|
molecule | a substance that cannot be separated into other kinds of substances |
chemical bond | the force that holds together the atoms in a molecule or compound |
chemical property | a characteristic of an object that describes how that object changes into a different substance |
electron | a subatomic particle found outside of the nucleus that has a negative charge |
atomic mass | the average mass of an atom of an element |
atom | the basic unit of matter |
covalent | a type of bond that forms when one or more pairs of electrons are shared between two atoms |
proton | a subatomic particle found in the nucleus that has a positive charge |
acid | any substance that can donate a proton (H+) or accept an electron pair |
neutral solution | has a pH of 7, neither acidic nor basic |
atomic number | the number of protons in an atom's nucleus |
chemical formula | tells the number of atoms and the kinds of atoms in a compound |
chemical reaction | elements are combined or rearranged |