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# 1st semester vocab

TermDefinition
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
Created by: p0501908
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