Chapter 1
The variable that you change/manipulate in an experiment
Independent Variable
Resistance to flowing (a physical property)
Viscosity
State of matter which material has neither a definite shape or a definite volume
Gas
The positively charged subatomic particles in the nucleus
Proton
The formula for work
force x distance
A bond with two nonmetals
covalent
The data you measure in an experiment. It is affected by what you do to the independent variable.
What is the dependent variable?
Can be hammered without shattering
Malleability
Force over an area
Pressure
This equals the number of protons in an atom
the atomic number
The formula for momentum
mass x speed
a positive ion
cation
These are things that you keep the same in an experiment
Constants
A heterogeneous mixture that separates into layers over time
Suspension
endothermic
The sum of an atom's protons and neutrons
Mass Number (or atomic mass)
the formula for potential energy
weight x height
the most reactive group on the periodic table
halogens
a well-tested explanation for a set of observations or experimental results
scientific theory
A substance made of two or more elements and can be broken down into those elements
Compound
the phase change in which a substance changes from a solid to a gas
sublimation
Atoms of the same type of element that have a different number of neutrons and therefore a different mass number
Isotopes
the formula for kinetic energy
1/2 x mass x speed2
least reactive group on periodic table
noble gases
a statement that summarizes a pattern found in nature
scientific law
The formula for density is...
mass/volume
the phase change in which a substance changes from a gas to a solid
deposition
The scientist who did the gold foil experiment to determine there is an atomic nucleus
Rutherford
The formula for acceleration (that does not use force)
final speed - initial speed / time
the name for this formula Al2Br3
Aluminum bromide