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Science Final1

matter solid,liquid,gases
mass amount of matter in an object(dxv)
volume amount of space an object takes up(lxwxh)
density the amount of mass in a given amount of space(m/v)
physical properties a property that can be observed without changing the identity of a substance
physical change change in size,shape,or state without forming a new substance
chemical change a change that produces a new substance
element a substance that cannot be broken down any further
atom the smallest particle of an element that has the same chemical properties of an element
nucleus an atoms dense center, where most of its mass is
protons positively charged particles
neutrons a particle with no charge
electrons negatively charged particles
atomic # the # of protons in an atom
compound a chemical combination of two or more elements
mixture a combination of two or more substances not chemically combined
extothermic a reaction that gives off heat
endothermic a reaction that obsorbs heat
melting solid to liquid
vaporization liquid to gas
condensation gas to liquid
freezing liquid to solid
boiling liquid to vapor
evaporization liquid to gas
chemical formula the relative amounts of elements in a compound
the ph of an acid less than 7
rotation earths complete spin on its axis which causes night and day and takes 24 hours
revolution when the earth spins on its axis and also revolves around the sun and takes 365 days (1year)
earths axis/tilt at an angle of 23.5
standard time zone a belt of 15* longitude, in which all places have the same time
international date line on the 180th line of longitude and when past you either gain a day or lose a day
phase of the moon the shape of the lighted part of the moon at any given time
phases of the moon new moon,waxing cresent,1st quarter,waxing gibbous,full moon,waning gibbous,3rd quarter,waning cresent
lunar eclipse when the moon passes into earths shadow (sun,earth,moon)
solar eclipse when earth passes through the moons shadow (sun,moon,earth)
tide the regular rise and fall of the water level along the shoreline.this twice daily rise and fall of the ocean water levels is caused by the gravity of the moon and sun
neap tide the slightest change from high to low tide that occurs when the sun,moon,and the earth form a right angle or are perpindicular to each other
spring tide the greatest changes from high to low tide that occur when the sun,moon,earth are lined up
Created by: softball36574