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Science

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
Matter   Anything that takes up space  
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Mass   The quantity of matter an object has  
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Elements   Substances that cannot be broken into simpler types of matter  
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Atom   The smallest part of an element. Still retains all the original properties of the element  
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Nucleus   (central core) comprised fo protons and neutrons.  
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Protons   Particles with a positive electrical charge  
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Neutrons   Have no electrical charge- they are neutral  
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Atomic Number   The number of protons in the nucleus of an atom. An ordering device for the periodic table.  
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Electron   Has a negative charge  
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In atoms   there are an equal number of protons and electrons so that the overall charge is zero  
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Molecule   When atoms of one element are combined with atoms of another element  
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Compounds   Elements combine with other elements.  
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Chemical reactions   Atoms undergo to come to a stable state, some bonds are broken, rearrange, form new bonds.  
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Covalent Bond   Two or more atoms share one or more pairs of electrons.  
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Ionic bond   An electron from one atom is transferred to an atom of another element. An attraction between the + and - ion  
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Ion   An atom with an electrical charge  
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Free energy   Yields a net release  
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Activation energy   The amount of energy necessary to begin any chemical reaction  
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Catalyst   A chemical substance that decreases the amount of activation necessary for a chemical reaction  
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Oxidation reaction   Occurs when an atom loses on or more electrons, resulting in a positive charge.  
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Reduction reaction   An atom gains one or more electrons, resulting in a negative charge.  
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3 kinds of matter   gases, liquids, and solids  
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kinetic energy   Is the energy of an object in motion. All forms of matter are constantly in motion.  
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Particles of Gas   Are far apart, move rapidly, and have random motion.  
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Gas pressure   The result of billions of particles colliding with an object simultaneously  
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Vacuum   Empty space with no particles and no pressure  
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Liquid   Forms when the temp of the gas lowers enought for condensation to occur  
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Vaporization   When a liquid can be turned into a gas  
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Evaporation   When a liquid can be turned into a gas and does not include boiling.  
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Solid   Restricted movement, orderly, repeating.  
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With Density   The lower the higher density it has  
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Archimedes principle   An object placed under water desplace a volume of water equal to its own volume  
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Gas A is noticed one minute before gas B   Gas B has a higher density than that of gas A. Gas B has the higher density so it would travel slower  
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Charles Law   The volume of a gas varies directly with the absolute temp.  
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Boyles Law   The volume varies inversely with the pressure at a constant temp.  
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ICE   Choose 3 lower levels  
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Fridge door left open for one hour   The room temp will increase  
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Water and Aluminum   Water heats slower and aluminum cools faster  
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The best electrical conductor   Metals (left side of table)  
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Isotopes   have different number of neutrons  
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Comparing toasters the one generating the most heat is   higher voltage and higher resistance  
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An electric current can be carried by movement of electrons and   ions  
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The more acid   the smaller the number  
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The stronger the base   the bigger the number  
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A difference of one pH unit represents a concentraion difference of   10  
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A difference of two pH units represents a concentration difference of   100  
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pH of 7 is a   neutral salt  
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Land on the moon you will   have the same mass on the moon as on earth  
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When Pushing or hoisting someing up directly   the amount of work by either is the same  
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A car traveling at 60mph comes to a rapid stop two types of energy most involved are   kinetic and heat  
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A person swings a ball in a circle and the string breaks near the point of attachment the ball with travel   in a straight line  
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Involve both chemical and physical changes   An egg is hard boiled  
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Actinides   the row of elements below the periodic table  
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Adhesion   molecular attraction between dissimilar molecules  
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Aerobic   with oxygen  
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Anaerobic   without oxygen  
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Agglutination   clumping of foreign cells  
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Agonist   muscle that bears the major responsibility for effecting a particular movement  
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Alpha particle   a cluster of 2 protons and 2 neutrons emitted from a nucleus in one type of radioactivity  
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Amnion   fetal membrane that forms a fluid filled sac around the embryo  
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Anion   an atom or molecule with a - charge  
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Articulation   the junction of two or more bones  
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Atomic weight   the weight in grams of one mole  
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Basal Metabolic Rate (BMR)   rate at which energy is expended by the body  
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Bowmans capsule   a network of capillaries encased in a membrane in the kidney for purpose of filtraion  
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Cathode   the + electrode at which reduction occurs  
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cation   an atom or molecule with a + charge  
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Colloid   suspension that does not separate on standing  
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Emulsion   suspension of two liquids which are incapable of mixing or attaining homogeneity  
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Endocrine system   internal organs  
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Erthrocytes   red blood cells  
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Faradays Law   the amount of a substance to the quantity of electric charge  
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Fermentation   release of energy from sugar without the use of oxygen  
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Fulcrum   the fixed point on which a lever moves when a force is applied  
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Hemoglobin   oxygen transporting component of erythrocytes  
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Mast cells   immune cells that function to detect foreign substances in the tissue  
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Mitosis   cell duplication  
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Molarity   the number of moles of solute in 1 liter of solution  
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Solute   the substance that is dissolved in a solution  
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Solvent   the host in a solution  
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Tidal air   amount of air during normal breathing  
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Ventrally   in the front, near the bottom  
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Accuracy   a reflection of how near the actual measurement the taken measure is.  
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Precision   a reflection of how close multiple measurements are to one another.  
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Density   is the mass of the object in relation to its volume  
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