CHEMISTRY 1 - CHAPTER 3 Flashcards
STUDY :D
states of matter
liquid, solid, gas
diference between vapor and gas
vapor is water, and gas is anything turning into the state of gas
what is a physical property
characteristic of matter that can be observed or measured without changing the sample´s composition
physical property
pure substances
extensive properties
depent on the amount of substance present (mass is an extensive property, lenght and volume are also extensives
intensive properties
independent of the amount of substance present (density of a substance, at a constant temperature and pressure, is the same no mater how much substance is present
what are chemical properties
the ability or inability of a substance to combine with or change into one or more other substances
chemical property
iron forming rust,
what is a physical change
altering a substance without changing its compositions
phase change
a transition of matter from one to another.
what is a chemical change
process that involves one or more substances changing into new substances ( rust, decompose, explode, oxidize, corrode, tarnish, ferment)
law of conservation mass
mass is neither created or destroyed during a chemical reaction- it is conserved.
law of conservation mass
mass reactantes = mass products
what is a mixture
a combination of two or more pure substances in which each pure substances retains its individual chemical properties.
homo = igual
hetero = diferente
