click below
click below
Normal Size Small Size show me how
1st semester vocab
Term | Definition |
---|---|
safety | the condition of being protected from or unlikely to cause danger, risk, or injury. |
lab equipment | the type of equipment found in a building or room equipped for conducting scientific research or for teaching practical science, as for carrying out scientific experiments, etc. |
density | the degree of compactness of a substance. |
chemical change | any process determined by the atomic and molecular composition and structure of the substances involved |
physical change | a change from one state (solid or liquid or gas) to another without a change in chemical composition |
atoms | the basic unit of a chemical element. |
periodic table | a table of the chemical elements arranged in order of atomic number, usually in rows, so that elements with similar atomic structure appear in vertical columns |
chemical formulas | a set of chemical symbols showing the elements present in a compound and their relative proportions, and in some cases the structure of the compound. |
chemical equations | the symbolic representation of a chemical reaction wherein the reactant entities are given on the left-hand side and the product entities on the right-hand side |
balanced forces | Forces are balanced when the forces pushing (or pulling) an object in one direction are the same size as the forces acting in the opposite direction. |
unbalanced forces | In physics, tension is the pulling force exerted by a string, cable, chain, or similar solid object on another object. |
newton's 1st law | an object at rest remains at rest and an object in motion remains in motion unless acted upon by an outside force |
newton's 2nd law | F=ma |
newton's 3rd law | with every action there is an equal and opposite reaction |
speed calculations | S=D/T |
distance calculations | D=ST |
time calculations | T=D/S |
speed graphs | graph that shows distance over time |
acceleration graphs | graph that shows speed over time |