Science Classifying Matter

Matter

anything that takes up space and has mass

pure substances

composition is the same throughout, set ratio and can’t be broken down

compound

a pure substance that has 2 or more different atoms bond together chemically, cant be broken down.

hetereogeneous

large particles, not evenly mixed. ex; trail mix, salad

homogeneous mixtures

evenly mixed, not visible, small particles. ex; coffee

molecules

two or more atoms chemically combined, smallest unit of compound.

atoms

smallest unit of element, basic building blocks of all matter

elements

made of only one type of atom. one capital = element. ex; N2, H2

particle

tiny piece of matter

mixtures

2 or more substances that are mixed together but not chemically joined, composition varies, no set ratio

solution

mixed evenly, not visible, and looks the same throughout (homogeneous mixture)

how many elements

118 elements, millions of compounds