Bio Review Chapter 2-1 Flashcards
what are the four states of matter
Solid
Liquid
Gas
Plasma
what is a nucleus made of an atom made of?
where is it found?
neutrons and protons
in the center of the atom
what charges do protons, neutrons, and electrons have?
protons - positive
electrons - negative
neutrons - no charge
What subatomic particles determines what element you have?
atoms
What subatomic particles orbits the nucleus
electrons
what is ionic bonding
bonding of ions ( weak)
why do elements bond
they bond for stability of electrons
how many electrons do atoms want in their outer shell
8
what is an ion
a atom or molecule that can gain or lose electrons
what is covalent bonding
sharing electrons (strong)
what kind of bonds can covalent bonds have?
what are the strongest
single , Double , triple
triple
what is a compound
something made of 2 or more elements
reminder (know how to read chemical forms)
REMEMBER!!!!
what evidence of a chemical change?
Bubbles
gives off light/heat
change in color
forms a precipitate
Are phase changes physical or chemical
physical change
what is energy
ability to work or cause change
what happens to energy when heat is given to it
more energy = more moving
what is absolute zero?
what happens to particle movement ?
lowest temp possible
there is no movment
what is he difference btwn exothermic and endothermic reactions
exothermic - gives off heat
endothermic - absorbs heat
what is a catalyst
something that effects rate if the reaction but inst used
(heat)
what is the difference btwn a solute and solvent
solute - thing being dissolved
solvent - thing doing the dissolving
what is a concentration
ratio of solute in the solvent dilute
what is diffusion
many partials going to less partials
when does diffusion stop
when partials hit equilibrium
