Chapter 3 Flashcards
States of Matter
Solids, Liquids, & Gases
Matter
Stuff the universe is made of; has mass & occupies space
Physical Changes
Do not change the composition of the substance
Chemical Change
Do change the composition of the substance
Elements
Substances that cannot be broken down
Atomic elements, single element like iron
Molecular Elements, molecules like water
Compounds
Molecules made of elements that are bonded together
Mixture
Something made of more than one type of molecule; can be separated by physical means
Pure Substance
Substance made of one type of molecule
Homogeneous
Mixture has regions with the same properties (evenly mixed)
Heterogeneous
Mixture has regions with different properties (not evenly mixed)
Molecule
More than one atom chemically bonded together