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Sci. Chapter 2 Vocab

Science Chapter 2 vocab

QuestionAnswer
physical property a characteristic of a pure substance that can be observed without changing it into another substance
volume the amount of space that matter occupies
mass a measure of how much matter is in an object
density the ratio of the mass of a substance to its volume
endothermic a change in which energy is taken in
exothermic a change in which energy is given off
atom the basic particle from which all elements are made
molecule a neutral particle made of two or more atoms joined by covalent bonds
kinetic energy energy of an object has due to its motion
potential energy stored energy that results from the position or shape of an object
element a pure substance that cannot be broken down into other substances by chemical or physical means
compound a pure substance made of two or more elements chemically combined
homogeneous a mixture in which pure substances are evenly distributed throughout the mixture, ex. whipped cream
heterogeneous a mixture in which pure substances are unevenly distributed throughout the mixture. ex. fruit bowl
energy the ability to do work or cause change
chemical bond the force that holds atoms together
chemical change a change in which one or more substances combine or break apart to form new substances
physical change a change in a substance that does not change its identity
temperature a measure of the average energy of motion of particles in a substance
physical property a characteristic of a pure substance that can be observed without changing it into another substance
volume the amount of space that matter occupies
mass a measure of how much matter is in an object
density the ratio of the mass of a substance to its volume
endothermic a change in which energy is taken in
exothermic a change in which energy is given off
atom the basic particle from which all elements are made
molecule a neutral particle made of two or more atoms joined by covalent bonds
kinetic energy energy of an object has due to its motion
potential energy stored energy that results from the position or shape of an object
element a pure substance that cannot be broken down into other substances by chemical or physical means
compound a pure substance made of two or more elements chemically combined
homogeneous a mixture in which pure substances are evenly distributed throughout the mixture, ex. whipped cream
heterogeneous a mixture in which pure substances are unevenly distributed throughout the mixture. ex. fruit bowl
energy the ability to do work or cause change
chemical bond the force that holds atoms together
chemical change a change in which one or more substances combine or break apart to form new substances
physical change a change in a substance that does not change its identity
temperature a measure of the average energy of motion of particles in a substance
Created by: x11xcarax11x