LEFT TO ENTER: polar; hydrogen bond; cohesion; adhesion; capillarity; solution; solute; solvent; concentration; saturated solution; aqueous solution; hydoxide ion; hydronium ion; acid; base; pH scale; buffer
Terms : Hide Images
| 35855022 | matter | anything that has mass and takes up space | |
| 35855023 | mass | a measure of the amount of matter in an object; a fundamental property of an object that is not affected by the forces that act on the object, such as gravitational force | |
| 35855024 | elements | a substance that cannot be separated or broken down into simpler substances by chemical means; all atoms of an element have the same atomic number | |
| 35855025 | atom | the smallest unit of an element that maintains the chemical properties of that element | |
| 35855026 | nucleus | in physical science, an atom's central region, which is made up of protons and neutrons | |
| 35855027 | proton | a subatomic particle that has a positive charge and that is located in the nucleus of an atom; the number of protons of the nucles is the atomic number, which determines the identity of an element | |
| 35855028 | atomic number | the number of protons in the nucleus of an atom; the atomic number is the same for all atoms of an element | |
| 35855029 | mass number | the sum of the numbers of protons and neutrons in the nucleus of an atom | |
| 35855030 | electrons | a subatomic particle that has a negative charge | |
| 35855031 | orbital, electron cloud | a region in an atom where there is a high probability of finding electrons | |
| 35855032 | isotopes | an atom that has the same number of protons (or the same atomic number) as other atoms of the same element but that has a different number of neutrons (and thus a different atomic mass) | |
| 35855033 | compounds | a substance made up of atoms of two or more different elements joined by chemical bonds | |
| 35855034 | chemical bonds | the attractive forces that hold atoms together | |
| 35855035 | covalent bonds | when two atoms share one or more pairs of electrons | |
| 35855036 | molecule | simplest part of a substance that retains all of the properties of that substance and can exist in a free state | |
| 35855037 | ion | electrically charged atom | |
| 35855038 | energy | the ability to do work | |
| 35855039 | chemical reaction | one or more substances change to produce one or more different substances | |
| 35855040 | reactant | the beginning substances of a chemical reaction | |
| 35855041 | product | the result of a chemical reaction | |
| 35855042 | metabolism | the term used to describe all of the chemical reactions that occur in an organism | |
| 35855043 | activation energy | the amount of energy needed for a reaction to start | |
| 35855044 | catalyst | chemical substance that reduces the amount of activation energy needed for a reaction to take place | |
| 35855045 | enzyme | a protein or RNA molecule that speeds up metabolic reations without being permanently changed or destroyed (biological catalyst) | |
| 35855046 | redox reaction | reactions in which electrons are transferred | |
| 35855047 | oxidation reaction | a reaction in which a reactant loses an electron(+) | |
| 35855062 | reduction reaction | a reaction in which a reactant gains an electron (-) |
