Mid-year review

Chemistry, Earth History, Infectious Diseases

Chemistry- 8.P.1- Understand the properties of matter and changes that occur when matter interacts in an open and closed container.

Physical Properties-` mass state a characteristic that you can only observe by changing the composition of the substance

Chemistry properties- a characteristic that you can only observe by changing the identity of the substance

Physical change- wood, chipper, painting object, state change

Chemical change- baking a cake frying an egg digestion burning wood
Elements- made of i type of atom. cannot by separated in to simpler substance by physical or chemical means. Located on the periodic table.

groups and periods- Groups- are organized by the reactiveness of the element

periods- are organized by the # of electron clouds surrounding the nucleus.

metals non metal metalloids the metal are separated from the non metal.

atomic number atomic mass proton neutron and electron