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| The process by which one or more substances change to produce one |
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| a solid that is preduced as a result of a chemical reation in solution. |
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| A chemical reation in which heat is released to the surroundings. |
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| a chemical reation that requires heat. |
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| Law of Conservation of Energy |
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| The Law that states that energy can't be created or destroyed. Yet, it may be changed from one form to another. |
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| A combonation symbols and numbers to represent an object. |
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| A represetaion of a chemical reacton using a formula. |
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| A substance or molecule that participates in a chemical reation. |
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| A substance that in forms in a chemical reation. |
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| Law of conservation of mass |
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| The law that states that mass can't be created or destroyed in ordanary chemical and physical changes. |
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| An interation that holds atoms or ions together. |
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| Compounds made of opposiely charged ions. |
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| Chemical compound that is formed by the sharing of electrons. |
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| Any compound that increases the number of hydronium ions in water. |
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| A compound that can reversibly change color depending on conditions such as pH. |
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| Any compound that increases the number of hydroxide ions in water. |
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| The reation of an acid and a base to form a neutral solution of water and salt. |
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| A value that is used to express the acidity or basicity. |
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| An ionic compound that forms when a metal atom replaces the hydrogen of an acid. |
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| A covalently bonded compound that contains carbon. |
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| A class of energy-giving nutrients that include: sugars, starches, and fibers. They contain carbon, hydrogen, and oxygen. |
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| A fat molecule that has similar properties. E.G. oils, waxes and steroids. |
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| A molecule that is made up of amino acids and that is needed to build and repair body structures, as well as regulate processes. |
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| Molecule made up of subunits called nucleotides. |
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| The speed of an object in a particular direction. |
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| The rate at which velocity changes over time; an object accelerates if its speed, direction, or both change. |
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| A push or pill exerted on an object in order to change the motion of the object; force has size and dirrection. |
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| A force that opposes motion between two surfaces that are in contact. |
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| The combonation of all of the forces acting on the object. |
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| A force of attraction between objects that is due to their masses. |
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| A measure of the gravitational force exterted on an object; its value can change with the location of the object in the universe. |
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| A measure of the amount of matter in an object. |
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| The constant velocity of a falling object when the force of air resestance is equal in direction to the force of gravity. |
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| The motion of a bady when only the force of gravity is acting in the body. |
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| The curved path that an object follows when thrown , launched, or otherwise projected near the surface of the Earth. |
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| The tendency of an object to resist being moved, or if in motion, to resist a change in speed or direction untill an outside force acts on the object. |
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| The band of colorrs produced when white light passes through a prism. |
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| The brightness of a star as seen from earth. |
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| The brightness that a star would have at a distance of 32.6 light-years from earth. |
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| The distance that light travels in one year; about 9.46 trillion kilometer. |
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| Sn Apparent shift in the position of an object when viewed from different locations. |
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| The location on the H-R diagram where most stars lie; it has a diagonal pattern from the lower right (low temperature and luminosity) to the upper left ( high temperature and luminosity). |
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| Hertzsprung-Russell diagram, a graph that shows the relationship between a star's surface temperature and absolute magnitude. |
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| A gigantic explosion in which massive star collapses and throws its outer layers into space. |
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| The theory that all mater and energy in the universe was compresses into an extreamely small volume that 13 billion to 15 billion years ago exploded and began expanding in all directions. |
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| A rotating cloud of gas and dust from which the sun and planets formed. |
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| A collection of stars, dust, and gas bound together by gravity. |
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| A large cloud of gas and dust in interstellar space; a region in space where stars are born. |
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| The average distance between Earth and the sun; approximately 150 million kilometers. |
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| One of the highly dense planents nearest to the sun; Mercury, Venus, Earth and Mars. |
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| The counterclockwise spin of a planet of moon as seen from above the planent's North Pole; Rotation in the same direction as the sun's rotation. |
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| The clockwise spin of a planet or moon as seen fom the North Pole. |
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| A planet that has a deep, massive atmosphere, such as Jupiter, Saturn, Uranus, Neptune. |
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| A natural of artificial body that revolves around a planet. |
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| The change in the sunlit area of one celestrial body as seen from another celestrial bady. |
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| An event in which tha shadow of one celedtrial body falls on another. |
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| Mercury and Venus have... |
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| Two moons: Phobos and Deimos. |
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| over 60 moons, of which include: Ganymede, Callisto, Io, and Europa. |
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| at leats 47 moons, of which includes: Titan |
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| at leat 27 moons, of which includes: Miranda. |
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| 13 known moons, of which includes:Triton |
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| Three moons: Charon, s/2005 p1, and s/2005 p2. |
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| A small body of ice, rock, and cosmic dust that follows an elliptical orbit around the sun and that gives off a gas and dust in the form of a trail as it passes close to the sun. |
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| A small, rocky object that orbits the sun; most asteroids are ocated in a band between the orbits of Jupiter and Mars. |
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| A relatively small, rocky body that travels through space. |
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| A broght streak of light that results when a meteoriod burns up in Earth's atmosphere. |
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| A meteoroid that reaches the surface of the Earth without burning up completely.(aka colision occurs) |
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