| Term | Definition |
|---|
| solution | a kind of homogeneous mixture |
| substance | a single kind of matter that is pure |
| matter | anything that has mass and takes up space |
| chemistry | the study of the properties of matter |
| heterogeneous mixture | a mixture in which you can see all of the parts |
| atom | the basic particle of an element |
| molecule | a particle formed when two or more atoms combine |
| chemical bond | the force of attraction between two atoms |
| homogeneous mixture | any mixture in which parts cannot be seen |
| chemical formula | this tells the elements and ratio of atoms in a compound |
| mass | the measurement of the amount of matter in an object |
| weight | the measure of the force of gravity on an object |
| International System of Units | the system of units used by scientists to measure the properties of matter |
| volume | the amount of space an object takes up |
| density | the amount of mass in a given volume |
| law of conservation of mass | matter is not created or destroyed |
| physical change | any change that alters the form or appearance of matter but does not make it a new substance |
| energy | the ability to do work or cause change |
| endothermic change | a change in which energy is taken in |
| temperature | a measure of the average energy of motion of the particles of a substance |
| thermal energy | the total energy of all of the particles in an object |
| chemical change | a change in matter that produces one or more new substances |
| exothermic change | a change in which energy is given off. Releases energy. |
| kinetic energy | energy of matter in motion |
| potential energy | energy an object has because of its position |
| chemical energy | the internal energy stored in the chemical bonds between atoms |
| electromagnetic energy | a form of energy that travels through space as waves |
| electrical energy | the energy of electrically charged particles moving from one place to another |
| electrodes | a metal strip that conducts electricity |
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