Question | Answer |
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 |