Exam #1 Flashcards
chemistry
the study of property of matter
matter
anything that has mass and takes up bits
atoms
the fundamental building blocks of matter
elements
the same to atoms, but cannot be broken down chemically
compound
a thing that is composed of two or more separate elements
physical properties
can measure matter
chemical properties
can only change matter
intensive properties
doesn’t matter how much you have
extensive properties
depends on how much you have
pure substance
all one thing
mixture
more than one thing
homogeneous
the same
heterogeneous
they’re different
decanting
sepearting 2 things
filtration
separating 2 things based on their size or state of matter
distillation
separating 2 things using a condensor
potential energy
stored energy
kinetic energy
energy that is in motion
accuracy
the actual value
precision
the repeated ability to be exact
basic unit
unit your measure yourself
derived unit
units that are calculated
density
measure of compactness
ions
atoms that have different numbers of protons and electrons
valence electrons
are determined by the column the atoms are in
cation
positively charged ions
anion
negatively charged ions
nuclear strong force
want to pull them all together (protons)
protons
positive charge
electrons
negative charge
neutrons
no charge or neutral
fission
separates things from being together
fusion
forces 2 things together
