-
The study of matter & changes
Chemistry
-
Information that is gathered and interpreted
Scientific Method
-
A T________: must be consistent with experimental evidence, must accurately produce the results of future experiments & must explain future observations
Theory
-
S______ L______ : statements that describe things that are consistently & reproducibly observed
Scientific law
-
M______: has mass and occupies space
Mass
-
P_______ P______: characteristics can be determined without changing chemical composition of matter
physical properties
-
Matter is typically found in one of three different physical states or phases:
solid, liquid, gas
-
Solids have ...?
Liquids have...?
Gases have...?
- Solids have fixed shapes and fixed volumes
- Liquids have variable shapes and fixed volumes
- Gases have variable shapes and variable volumes
-
Ability to do work & transfer heat
Energy
-
1)What are the two forms of energy?
2)Which one is stored energy and which is the energy of motion?
1 & 2) potential and kinetic
-
_______ is how close a measured value is to an actual value
accuracy
-
________ is a measure of reproducibility
precision
-
D____ ______ t_______ - the atom is the basic unit form which matter is constructed.
daltons atomic theory
-
M________ a_______ t________: normal matter is made from atoms which are built from subatomic particles: protons, neutrons, electrons
modern atomic theory
-
I________: Atoms of an element that have different # of neutrons
Isotopes
-
G________ s________ is when the electrons are in energy levels as near as possible to the nucleus.
ground state
-
R_______ I_______: unstable nuclei spontaneously disintegrate to become more stable releasing high energy particles and/or high energy electromagnetic radiation
radioactive isotope
-
N______ r_____: energy/ particle releases from this nuclear change
nuclear radiation
-
F________: an atom's nucleus splits to produce two smaller nuclei, a number a number of neutrons, and energy.
Fission
-
F_____: a nuclear process in which smaller nuclei combine to form a larger nucleus.
fusion
|
|
