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2k19 PS Chemistry

Review for Final Exam Chemistry Part

study of mater and its changes chemistry
variable plotted on x axis ; being tested independent variable
variable plotted on y axis ; the results dependent variable
subatomic particle with positive charge proton
subatomic particle with negative charge electron
subatomic particle with no charge neutron
state of matter: definite shape + definite volume solid
turn blue pH paper red acids
turn red pH paper blue bases
amount of matter an object has mass
state of matter: definite volume + indefinite shape liquid
conditions kept the same during an experiment constants
group that does not receive the independent variable(s) control
electrons found furthest away from nucleus valence
Group Name of 8A (18) elements Noble Gases
Group Name of 1A (1) elements Alkali Metals
Group Name of 7A (17) elements Halognes
Group Name of 2A (2) elements Alkali Earth Metals
negative ions from groups 5A , 6A , 7A anions
positive ions from groups 1A, 2A, 3A cations
starting material in a chemical reaction reactants
speeds up a chemical reaction catalyst
ending material in a chemical reaction products
arrangement of elements on current periodic table increasing atomic number
has pH of 7 and no change to litmus paper neutral
compound made by sharing valence electrons covalent
compound made by transferring valence electrons ionic
electrons closest to the nucleus core
horizontal rows on periodic table (7) period
vertical columns on periodic table (18) group / family
type of chemical equation that does NOT have equal numbers on both sides skeleton
numbers NEVER changed to balance chemical equation subscripts
numbers added/changed to balance a chemical equation coefficient
SI unit for temperature Kelvin
SI unit for mass kilograms
SI unit for time seconds
SI unit for length meters
Visual representation of valence electrons only Lewis Dot Structure
says that 8 is the stable number of valence electrons octet rule
having 2 atoms when alone like N , O , F diatomic
having 4 atoms when along like P tetratomic
change in number of electrons ion
change in number of protons different element
change in number of neutrons isotope
neutral group of elements joined with covalent bonds molecule
logical steps used to solve scientific problem/question scientific method
things worn during lab to keep you safe PPE (personal protective equipment)
last 2 things done after lab is finished clean up and wash hands
most common state of matter in universe plasma
going from solid to liquid melting
going from liquid to solid freezing
going from liquid to gas boiling / evaporation
going from gas to liquid condensation
going from solid to gas sublimation
prefix for 2 di
prefix for 3 tri
prefix for 1 mono
prefix for 4 tetra
prefix for 5 penta
Created by: cadetjt