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sci vocab


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neutral particle formed when atoms share electrons
to draw a conclusion base on observation
the best explanations that have been found so far
earth science
study of Earth systems and systems in space, including weather and climate systems, and the sudy of nonliving things such as rocks, oceans, and planets
the second series of inner transition elements which goes from thorium to lawrencium
polar bond
bond resulting from the unequal sharing of electrons
chemical formula
combination of chemical symbols and #'s that indicates which elements and how many atoms of each element are present in a molecule
variable that is not changed in an experiment
a set of objects or parts that form a whole
Pascal's principle
states that when a force is applied to a confined fluid, an increase in pressure is transmitted equally to all parts of the fluid
noble gas
element in group 18 of the periodic table
life science
study of living systems and how they interact
atom that is no longer neutral b/c it has gained or lost an electron
ionic bond
attraction that holds oppositely charged ions close together
scientific law
a rule that describes a pattern in nature but does not try to explain why something happens
controlled experiment
involves changing one factor and observing its effect on one thing while keeping all other things constant
force exerted on a surface divided by the total area over which the force is exerted
covalent bond
chemical bond formed when atoms share electrons
reasonable guess that can be tested and is based on what is known and what is observed
physical science
study of matter, which is anything that takes up space and has mass, the study of energy
electron dot diagram
chemical symbol for an element, surrounded by as many dots as there are electrons in its outer energy level
independent variable
factor that is intentionally varied by the experimenter
family of elements in the periodic table that have similar physical or chemical properties
a systematic way of learnig more about the natural world
dependent variable
factor that may change as a result of changes purposely made to the independent variable
chemical bond
force that holds two atoms together
Archimedes' principle
states that the buoyant force of an object is equal to the weight of the fluid displaced by the object
info gathered during an investigation; recorded in the form of descriptions, tables, graphs, or drawings
use of scinece to help people in some way
substance that can make something happen faster but is not changed itself
metallic bond
bond formed when metal atoms share their pooled elctrons
vaporization that takes place at the surface of a liquid
buoyant force
upward force exerted on an object immersed in fluid
factor that can be changed in an experiment
mass divided by volume

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