Math
converting 5000mL to L requires this method
dimensional analysis
matter that has a definite volume but takes the shape of its container
liquid
part of atom with positive charge
proton
Pure substance made of only one type of atom
Element
Melting
Solid --> Liquid
0.00032 g written in scientific notation
3.2 x 10^-4 g
matter with no definite shape or volume
gas
electrons in the outermost shell that determine chemical reactivity
valence electrons
Two or more elements chemically bonded
compound
Liquid --> Gas
the type of equation skill needed to solve 3x + 7 = 19
algebra
matter that is ionized and can conduct electricity, often found in stars
plasma
atomic number represents this
# of protons
a mixture with uniform composition throughout
homogeneous
Condensation
Gas --> Liquid
the variable that changes in an experiment, often on the x axis of a graph
independent variable
a change in matter that creates a new substance
chemical change
mass number is the sum of these two particles
protons and neutrons
a mixture that is not uniform throughout
heterogeneous
Freezing
Liquid --> Solid
the reason dimensional analysis is important in chemistry
helps check calculations and convert units correctly
a property that depends on the amount of matter
extensive property
an atom with equal protons and electrons has this charge
neutral
salt dissolved in water is an example of this type of mixture
homogeneous
Sublimation
Solid --> Gas without passing through the liquid phase