examples of each Most of the elements found on earth are metals Properties of metals: most are shiny, ductile, malleable, conductive Physical change energy transfer Properties of different phases of matter: solids, liquids, gases A change of phase is a physical change (no new substance is produced) Matter can be made to change phases by adding or removing energy Expansion and contraction Expansion: adding heat energy to a substance causes the molecules to move more quickly, and the substance to expand Contraction: when a substance loses heat energy, the molecules slow down, and the substance contracts Water as a special case: water expands when it changes from a liquid to a solid Changing phases: condensation;
(the elements; found; L:on earth) (no new substance; is produced; ) (a substance; loses; heat energy) (it; changes; from a liquid; to a solid Changing phases; condensation) (water; expands; T:when it changes from a liquid to a solid Changing phases: condensation) (Matter; by adding; ) (the molecules; slow down; T:when a substance loses heat energy)
the elements no new substance a substance it water Matter the molecules
found is produced loses changes expands by adding slow down
L:on earth
heat energy
from a liquid to a solid Changing phases condensation
T:when it changes from a liquid to a solid Changing phases: condensation
T:when a substance loses heat energy