| A | B |
|---|
| atom | smallest part of an element that still shows the properties of the element |
| atomic number | number of protons in an element |
| acid | releases hydrogen ions when dissolved in water |
| molecular formula | shows the kinds and ratios of atoms in a compound |
| neutralization | reaction that occurs when equal strength acids and bases are mixed in equal volumes |
| covalent bond | bond is formed when atoms share electrons |
| element | substance composed of only one type of atom |
| ion | a charged atom |
| isotope | atoms of the same element that have different atomic masses |
| nonpolar covalent bond | bond formed when atoms share electrons equally |
| ph | measures the concentration of hydrogen ions in a solution |
| reactants | substances that participate in a chemical reaction |
| activation energy | energy need to start a chemical reaction |
| hydrogen bond | bond formed by polar molecules attraction |
| mass number | sum total of protons and neutrons in an atom |
| tertiary structure | protein structure is determined by the interaction of variable groups within the polypeptide chain |
| atomic nucleus | contains the protons and neutrons |
| atomic symbol | one or two letter abbreviations used to represent element |
| base | substance that releases hydroxide ions when dissolved in water |
| structural formula | represent the positions of atoms in a substance |
| compound | sunstance composed of two or more different kinds of elements |
| electron | negative particle found in an atom |
| inorganic compound | compound that does not contain carbon hydrogen and oxygen together |
| ionic bond | bond is formed by the transfer of electrons |
| neutron | neutral particle in an atom |
| organic compound | compound composed of carbon hydrogen and oxygen together |
| proton | positive particle in an atom |
| molecular formula | used to represent the types and ratios of atoms found in a substance |
| polar covalent bond | bond is formed when electrons are shared unequally |
| products | the materials that are formed by a chemical reaction |
