matter Flashcards
matter
anything that occupies space and has mass
pure substance
consist of one type of substance only and are made up either of elements or compounds
element
a substance which cannot be broken down further into simpler substances
compound
formed when 2 or more elements combine chemically with each other in a fixed ratio
alloy
mixture of metals
semi-metals/metalloids
elements not classified as metal/non-metal
display properties of both
heterogeneous mixtures
a mixture in which the composition of the mixture is not uniform
homogenous mixtures
a mixture in which the composition of the mixture is the same throughout and consists of 2 or more substances in the same phase
molecule
a group of covalently bonded atoms
ion
a charged atom
cation
a positively charged ion
anion
a negatively charged ion
atomic number
the number of protons in an atom
mass number
number of protons plus neutrons in an atom
isotope
atoms of the same element which have different mass numbers
mixture
a combination of 2 more substances in which the substances retain their own properties
suspension
any combination of substances that do not dissolve in one another results in a heterogeneous mixture
miscible
liquids that mix completely with each other
solution
homogeneous mixture of solute and solvent
solvent
the substance in which another substance is dissolved , forming a solution
solute
the substance that is dissolved in the solution
neutrons
atomic mass - atomic number
name 3 strongly magnetic elements
iron
cobalt
nickel
check for purity of a substance
using boiling + melting points
chromatography
