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Science Final1
| Question | Answer |
|---|---|
| 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
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