States of Matter
What is matter?
Everything that has mass and takes up space
Burning wood- chemical or physical change?
Chemical change
F+1 is a _________ (cation or anion)
Cation
silver bromide
AgBr
CS2
Which state of matter has particles that are tightly packed?
Solid
List 3 physical properties
density, volume, texture, shape, length, mass, etc
How do you calculate atomic mass?
atomic mass = protons + neutrons
lead (II) nitride
Pb3N2
phosphorous pentachloride
PCl5
____________ has no definite shape, but has definite volume
Liquid
A firework exploding is a ___________ change
Chemical change
How do you calculate the amount of neutrons?
Neutrons = mass # - protons
magnesium chloride
MgCl2
calcium hydroxide
Ca(OH)2
A phase change from a solid to liquid
melting
True or false: When something undergoes a chemical change, the product usually takes on new physical properties
True
The average atomic mass is the weighted averaged of an elements ________
isotopes
Lithium Sulfide
Li2S
potassium nitrate
KNO3
A phase change from a liquid to a gas
evaporation
Name 2 chemical properties
Toxicity, flammability, acidity, reactivity, heat of combustion
Isotopes of an element have the same number of _________, but a different number of _________.
protons; neutrons
Calcium oxide
CaO
copper (II) nitrate
Cu(NO3)2