Stack #128312
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| chemistry | the study of what substances are made up of and how one substance can be changed into another
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| matter | anything that takes up space and has weight
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| weight | a measure of the pull of gravity on an object
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| mass | the amount of matter that makes up an object
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| density | the amount of matter in one unit of volume
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| atom | a tiny particle from which all substances are composed; the smallest particle of an element
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| nucleus | a tiny, extremely dense core of an atom
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| electron | one of the tiny particles that circle around the nucleus of an atom
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| neutrons | a particle that helps make up the nucleus of an atom
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| protons | a positively charged particle that helps make up the nucleus of an atom
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| neutral | anything lacking in electric charge
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| electron cloud | the cloudlike shield around an atom's nucleus formed by the atoms fast moving elecons; prevents other atoms from moving into the same space
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| shell | a group of electrons in an atom that orbit at roughly the same distance from the nucleus
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| atomic number | the number of protons in an atom
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| element | a substance that is composed of only one type of atom
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| compound | a substance that is composed of more than one type of atom, bonded together
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| periodic table of the elements | a chart constructed by Dmitri Mendeleev to arrange the elements in such a way as to group similar elements together
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| metals | a large group of elements that are typically shinny, with a silvery color and are good conductors of electricity
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| nonmetals | the elements in the periodic table that are not classified as metals or semi-metals
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| halogens | elements in the 7th column of the periodic table such as flourine and chlorine that show a special tendency to form compounds with alkali and alkaline earth metals
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| sublime | to turn directly from a solid into a gas
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| noble gases | the elements in the last column of the periodic table such as helium and argon; they do not combine with anything else except under unusual circumstances
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| molecule | a tiny group of two or more atoms that are bonded tightly together
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| molecular compound | a compound composed of individual molecules
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| crystal | a geometric arrangement of atoms
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| ionic compound | a compound composed of charged atoms or groups of atoms
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| mixture | the atoms are not connected, but just around each other
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| chemical reaction | a process in which a atoms of elements or compounds are rearranged to form new substances
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| combustion | a chemical reation in which a substance reacts rapidly with oxygen
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| plutonium | the transuranium element that is most abundant
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| osmium | a metal that is the densest element
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| mercury | the only metal that is liquid at room temperature
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| bromine | brown halogen that is liquid a ordinary room temperatures and pressures; used as an ingredient in photographic film
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| oxygen and nitrogen | the most abundant nonmetal gases in the atmosphere
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| iodine | a nonmetal and halogen that is a purple solid at room temperature
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| diamond | a hard crystaline formed of carbon that is the hardest of all known minerals
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| chromium | metal - often applied to polished steel to protect it from rusting and give the steel a mirrorlike surface; commonly known as chrome
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| zinc | metal - used to galvanize steel; commonly made into such items as chainlink fences, trash cans, roofing nails, and car bodies; an ingredient in flashlight batteries
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| nickel | metal - a very hard metal that is an important ingredient in stainless steel and rechargeable batteries; also used as a lining for tanks holding corrosive chemicals
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| lead | metal - the densest of everyday metals; used in car and trunk batteries and to make wheel weights and firearms ammunition
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| hydrogen | nonmetal - the very first element in the periodic table; a colorless and odorless gas at room temperature
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| two forms of carbon | diamond and graphite
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| sulfur | nonmetal element that is an odorless yellow solid at room temperature; called brimstone in the Bible
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| phosphorus | nonmetal element that is a waxlike solid with two forms, white phosphorus and red phosphorus; compounds of phosphorus and oxygen known as phosphates are used as fertilizer and food preservatives
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| silicon | a gray semimetal that in pure form is used to make computer chips and an ingredient in common sand, the mineral quartz, and glass
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| sodium and potassium | alkali metals - common in the rocks, soils and oceans of the earth
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| calcium | a silver gray element that is the most common alkaline earth metal, an ingredie in limestone, cement, teeth, and bones
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| magnesium | an alkaline earth metal that is strong but light weight and is used for parts in airplanes and some cars
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| fluorine | a gaseous nonmetal and halogen with many imortant uses
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| chlorine | a gaseous nonmetal that is most widely used halogen
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| helium | a noble gas that replaced hydrogen as the gas with which to fill balloons because it is unreactive
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| argon | the most plentiful of the noble gases; commonly used as a filler in incandescent light bulbs
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| neon | an element and noble gas that is commonly used in "neon signs"
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Created by:
kbtarheelgirl