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Living Env. Chapter
2020 - Chapter 2
Term | Definition |
---|---|
Atom | smallest particles of an element that retains the characteristics of the element |
Isotope | atoms of the same element that have varying numbers of neutrons |
Element | substance that can not be broken down into simpler chemical substances |
Molecule | 2 or more atoms bonded together |
Compound Molecule | 2 or more different elements bonded together |
Ion | particles with a negative or positive charge |
Proton | positive charge |
Neutron | neutral charge |
Electron | negative charge |
mixture | material made up of 2 or more different elements sugar and sand) |
solution | mixture that involves a solvent and a solute |
solute | substance that is dissolved (sugar in water) |
solvent | substance that does the dissolving (water) |
covalent bond | the outer electron is shared between 2 atoms |
ionic bond | the atom borrow an electron |
PH above 7 | base or alkaline - OH- |
PH below 7 | acid - H+ |
PH neutral | 7 - pure water |