What's the "Big Idea" Anyway?
The study of the composition of matter and the changes that it undergoes.
What is Chemistry?
Anything that has mass and takes up space.
What is matter?
A quantity that has both a number and a unit.
What is a measurement?
The smallest particle of an element that retains its identity in a chemical reaction.
What is an ATOM?
in 1897, this English Scientist discovered the ELECTRON.
Who is J.J. Thompson?
The study of all chemicals containing Carbon?
What is Organic Chemistry?
A physical blend of two or more components.
What is a mixture?
A given number which is written as the product of two numbers; a coefficient and 10 raised to a power.
What is Scientific Notation?
Atoms are generally made up of these three subatomic particles.
What are Electrons, Protons, and Neutrons?
in 1866, this scientist discovered the PROTON?
Who is Eugen Goldstein?
Explaining the Natural World.
Preparing for a Career.
Being an informed Citizen.
Why study Chemistry?
These differences can be used to separate mixtures.
What are Physical Properties?
A measure of how close a series of measurements are to one another.
What is Precision?
The total number of Protons and Neutrons is generally accepted as the ______________ __________ of an atom.
What is the mass number?
In 1932, this English scientist discovered the NEUTRON.
Who is James Chadwick?
The ________________ variable that is "changed" during an experiment. The variable that is "observed during an experiment is called the ______________ variable.
What is the INDEPENDENT variable and the DEPENDENT variable?
In a chemical equation the ______________s are listed on the LEFT of an arrow and the ____________s are listed on the RIGHT of an arrow.
What are "Reactants" and "Products"?
Scientists usually use TWO equivalent units of temperature. They are ______________ and _____________.
What are Celsius and Kelvin?
These atoms have a differing number of neutrons and different mass numbers. However, the number of electrons and protons remain the same.
What are isotopes?
In 1911, this English scientist tested the "Plumb Pudding' Model of the atomic model. He later described the nuclear atom, the Protons and Neutrons are in the Positively charged Nucleus. The Electrons are distributed around the Nucleus.
Who is Ernest Rutherford?
Materials and the Environment.
Energy.
Medicine and Biotechnology.
The Universe.
What are areas of Modern Research in chemistry?
A transfer of energy.
A change in color.
The production of a gas.
The formation of a precipitate.
What is evidence of a chemical reaction?
A measurement which is the ABSOLUTE VALUE of the ERROR divided by the ACCEPTED VALUE multiplied by 100%.
What is Percent Error?
How does a Chemistry Student calculate the number of Neutrons of an Element?
What is?
Neutrons = Mass Number - Atomic Number.
This Greek philosopher, _____________ was among the first to suggest the existence of the atom.
By using experimental methods, another English chemist, _________ _________ transformed the previous philosopher's ideas about the atom into a scientific theory.
Who are Democritus and John Dalton?