Pure Substances and Mixtures Categorizing Matter

All matter in the universe is either a ____________________________ or a ____________________________.

________________________ = Made of either a single element or one particular kind of compound Has a ____________________ composition H2O, NaCl, C, etc. Can’t be broken down into simpler substances through _________________________ changes Two Types of Pure Substances _________________________

___________________________ = Consists of only one type of ___________________ Au, Ag, C, Na, Br, K, H, etc. 2 or more different atoms ________________________ combined together Composition is always the _________________ Cannot be _____________________________ using physical changes H20, NaCl, CO2, etc.

___________________________ = Substances that have been combined ______________________________ (no chemical reaction) ___________________________ Mixtures = solutions “Homo” = ________________________ Mixture that looks the same everywhere Air, salt water, sugar water ___________________________ Mixtures = suspensions “Hetero” = ________________________ Looks different throughout Mud puddle, blood, salad dressing, chocolate chip cookie, bird seed

Element, Compound, or Mixture?