The measure of gravitational pull.
a measure of the quintity of matter
anything with mass and volume
Fundemental unit of all matter. The smallest particle that is still and element.
positive charge, in necleus.
No charge, in neclues.
negative charge, orbit outside.
substances that re composed of only one type of atom. Cannot be broken into simplier substances.
indicates the sum of protons and neutrons
directly indicates the number of protons. Indirectly indicates the number of electrons.
atoms of the same element that have that same atomic number but different mass numbers. have different amounts of neutrons.
isotopes that are radioactive. relaease energy and particles from their neclues.
composed of 2 or more different elements that are chemically bounded.
-have different chemical and often physical properties than elements of which they are composed.
-can't be sepereted by physical means
-are represeted with a chemical symbol.
electrons in the outer energy leve.
Elements are ___ when there outer energy level is filled.
bond where atoms share pair(s) of electrons that then circle both necleuses.
bond where electrons are transfered and atoom are attracted by positive and negative charges.
Charged atoms - have unequal numbers of protons and electrons.
composed of two or more things in any porportion.
-no chemical bonding
-components can be seperated physically.
-components mantain their original chemical properties.
a mixture where one substance is unifromly distrubated throughout another.
the stuff that gets dissolved in a solution
the substance that dissolves the stuff.
the measure of the amount of solute that disloves in a fixed amount of solvent.
point at which ne more solute can dissolve into a solvent.
solution where water in the solvent.