mixture, compounds and states of matter Flashcards
what is a compound?
a substance that contains two or more elements chemically bonded, different chemical properties
what does a compound formed from non-metals consist of?
molecules (covalent bonding)
what does a compound formed from a metal and a non-metal consist of?
ions (ionic bonding)
what is a mixture?
a substance that contains two or more elements, not chemically bonded, same chemical properties
why can mixtures be separated easily, unlike compounds?
mixtures aren’t chemically bonded, unlike compounds
give 2 examples of mixtures
air
crude oil
give 2 examples of compounds
carbon dioxide
ammonia
compare density of states
solid is the most dense, gas is the least dense
compare particle arrangement in states
solid-particles vibrate on the start
liquid-particles move around each other, they are touching
gas-particles are no touching, spread out to fill space
which particles have the most energy?
in a gas
in which state are the forces between particles strongest?
in a solid
gas to liquid
condensation
liquid to solid
freezing
solid to gas
sublimation
solid to liquid
melting