mid-year review

chemistry, earth history, infectious diseases

chemist-8.p.1 understand the propertises of matter

physical properties can be observed or measured without changing it

odor mass density volume color state

chemical properties these properties can only be observed during a change into new matter with different properties flammability reactivate

physical change does not form a new substance

chemical change one or more substances are changed in into new substances that have new and different properties

elements build of matter made of atoms

compounds substance formed when tow or more elements chemicals combine

mixtures combination of tow or more different substances that is mixed but combined

periodic table a table of the chemical elements arranged in order of atomic number, usually in rows,so that elements with similar atomic structure appear in vertical column

group & period are to be found on the periodic table and group are on the side and the period are on the top