Term | Definition |
Matter | anything that has mass and takes up space |
chemistry | the study of properties of matter and how it changes |
physical properties | color
texture
length
etc |
chemical properties | flammable
rot
rust
reacts |
element | a substance made of only one type of atom |
atom | all matter is made of |
compound | 2 or more elements chemically combined |
molecule | a neutral group of two or more atoms |
chemical formula | symbols used to show elements |
weight | the amount of gravity acting on an object |
mass | how much matter in an object |
volume | how much space an object takes up |
density | how much is packed in an object.
mass divided by volume |
physical change | changes form of appearance |
chemical change | changes into a different substance |
law of conservation of mass | states that matter is not created or destroyed during a physical or chemical change |
thermal energy | total of kinetic and potential energy of all the particles in an object |
exothermal change | change in which energy is realized |
endothermic change | a change in which energy is absorbed |
heterogenous mixture | mixture where you can see all the different parts |
homogenous mixture | mixture where you can't see all the different parts |
what is the difference between mass and weight | mass=stuff inside an object
weight=the amount of gravitational force acting on an object |
what is matter made of | atoms |
how can you find density | mass/volume |
what are the two types of mixtures | heterogenous and homogeneous |
how can we describe matter | using physical properties and chemical properties |
what happens to a substance in a physical and chemical change | physical- changes form
chemical- changes substance |