ch 1 Flashcards
examples of chemical changes
- burning of hydrocarbons
- rusting of iron
- souring of milk
examples of physical changes
- melting of ice
- boiling of ethanol
- dissolving sugar in water
physical properties
Properties a substance shows by itself without interacting with another substance.
examples of physical properties
color, melting point, boiling point, density
chemical properties
Properties a substance shows as it interacts with, or transforms into, other substances.
examples of chemical properties
flammability and corrosiveness
intermolecular forces
the interactions between molecules, atoms, or ions
liquids: definite ___ but no definite ___
volume; shape
liquids have particles with high …
IMF
gases have no definite …
shape or volume
gas particles have no …
IMF
energy
ability to do work or transfer heat
lower energy states are ___ ___ and are favored over higher energy states
more stable
(1st law of thermodynamics) conservation of energy
energy is neither created or destroyed
add/sub sig fig rules
least number of decimal places
