6 Sci Chapter 6 Word Scramble
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Term | Definition |
chemistry | the study of what substance are made of, and how one substance can be changed into another |
matter | anything that takes up space & has mass |
weight | a measure of the pull of gravity upon an object. can change from place to place |
mass | the amount of matter that makes up an object |
density | the amount of matter (mass) in one unit of volume (space) |
atoms | the tiny particles that make up matter |
nucleus | the tiny, extremely dense core of an atom |
electrons | tiny particles in an atom that circle the nucleus at tremendous speed |
electron cloud | the shield or cloud formed by fast-moving electrons in an atom that prevents other atoms from moving into the same space |
neutrons | one of the two kinds of particles that make up the nucleus of an atom; has a neutral charge |
protons | one of the two kinds of particles that make up the nucleus of an atom; has a positive charge |
neutral | lacking as electrical charge |
shell | a set of electrons in an atom that orbits the nucleus at roughly the same distance |
atomic number | the number of protons in an atom |
element | a substance that is composed of only one type of atom bonded together |
compound | a substance that is composed of more that one type of atom bonded together |
periodic table of elements | a chart constructed by Dmitri Mendedeev to arrange the elements in such a way as to group similar elements together |
nickel | a very hard metal that is used to make stainless, rechargable batteries, tanks to hold corrosive chemicals, and certain coins |
chromium | "chrome"; a shiny metal often applied to polished steel to prevent it from rusting |
lead | the denest of everyday metals; used to make car and track batteries, wheel weights, and firearms ammunition |
zinc | a metal often used to coat steel to prevent it from rusting; also used in flashlight batteries |
sulfur | an oderless, yellow solid called brimstone in the Bible; flammable and burns easily |
carbon | basic building block of ALL LIVING things; found in two forms, graphite and diamond |
silicon | a semimetal that is an ingrediant in sand, quartz, and glass; in pure form, used to make computer chips |
phosphorus | a waxlike solid with two forms, white and red |
hydrogen | the simplest atom with one proton and one electron which is also a colorless and odorless gas used in chemical factories and as a rocket fuel. |
potassium | a common alkali metal found in the rocks, soils, and oceans of the earth; does not occur naturally in pure form |
magnesium | a strong but lightweight alkali metal used in parts for airplanes and some cars |
calcium | the most common alkaline earth metal; an ingredient in calcium carbonate |
sodium | a common alkali metal that is as ingredient in table salt and lye; also used in street lights |
metals | the elements located to the left and center in the periodic table; most have a lustrous silvery color and are at room temperature |
nonmetals | the elements located at the right side of the periodic table; include many solids and several gases |
halogens | the elements in the next to last column of the periodic table; highly reactive, showing a tendency to form compounds with alkali and alkaline metals |
sublime | to turn directly from a solid to a gas (such as iodine does when heated) |
noble gases | the elements in the last column of the periodic table; are gases and do not combine with other elements except under very unusual circumstances |
molecule | a tiny group of two or more atoms that are bonded tightly together |
molecular compound | a compound that is composed of individual molecules |
crystal | a geometric arrangment of atoms |
ionic compounds | a compound composed of charged atoms or groups of atoms |
chemical reaction | a process in which atoms of elements or compounds are rearranged to form new substances |
combustion | burning; a chemical reaction in which a substance reacts rapidly with oxygen |
plutonium | the most abundant of the transuranium minerals |
osmium | the densest element |
mercury | the only metal that is liquid at room temperature |
bromine | a nonmetal (halogen) that is liquid at ordinary room temperatures and pressures |
oxygen and nitrogen | the main ingredients of air; together make up almost 99% of the earth's atmospere |
iodine | a halogen that sublimes instead of melts when heated; it is also added to salt. |
diamond | the hardest of all known substances |
oxygen | most abundant element at the surface of the earth |
semimetals, nonmetals and metals | three main groups of elements |
Created by:
Mrs_CC
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