2nd test

anything that has mass and occupies space

solid, liquid, gas

constant volume and shape

constant volume but takes shape of container

variable volume and shape that fills container

change of one material into another with new properties (digestion, burning, rotting)

affect the form of a material but its not composition (melting ice, folding paper)

heterogeneous, homogeneous

two or more items that can be easily separated (trail mix)

two or more items that appear the same throughout

constant composition (elements,compounds)

a pure susbtance amde of only 1 atom. CHONPS and others (diatomic,isotopes,trace)

elements the body needs in small amounts for homeostasis

elements with same # of p+ and e-, but different # of neutrons

always found paired in nature H2,N2, O2, F2, Cl2, Br2, I2

formed by transfer of valence electrons to form (cations, anions)

formed by a sharing of valence electrons, two elements paired together (ploar, non polar)

positive

negative

when sharing is not equal

when sharing is equal

loves water and polar bond

dislike water and non-polar

CHONPS and others (diatomic, isotopes, trace)