chemistry chapter 2 Flashcards
3 states of matter
Solid,liquid,gas
how can physical changes be classified
reversible or irreversible
How can mixtures be classified
Homogenous or heterogenous
how can mixtures be seperated
physical changes
how are elements and compounds different
Compound is made of elemtents
how can substances and mixtures be distinguished
mixture is a combonation of substances
what always happens during a chemical change
new substance is created
what are the 4 possible clues chemical changs has occured
Color change, absorb/release energy, gas, precipitate
mass
amount of matter in an object
volume
amount of space an object takes up
extensive property
depends on amount of matter in an object
intensive property
does not depend on the amount of matter in a sample. Type/identity
substance
matter with a uniform and definite composition
physical propertie
quality of a substance observed without changing the substances compostion.
ex: color,mass,melting point, volume
physical change
compostion of the material does not change
mixture
a physical combination of multiple substances that retain their individual identities.
heterogenous mixture
non-uniform composition
Ex: chicken noodle soup, granite, milk
homogonous mixture
uniform composition throughout
Ex: lemonade, black coffee, steel
solution
Another name for homogonous mixture
phase
a physically distinctive form of matter
filtration
separate solid form liquid based on differences in state/phase
distillation
separate liquids based on boiling points
element
simplest form of matter that has a unique set of properties
compound
chemical combonation of 2 or more elements
