Basic Atomic Structure Flashcards
Matter
Anything in existence excluding energy. in other words something that has mass.
Nucleus
The center of a atom primarily made of protons where neutrons are used to keep the protons in place
Proton
One of the smallest type of matter with an amu of 1 and a positive charge.Can be found inside the nucleus
Neutron
Another type of matter with amu equivalent to that of a proton and with no charge.It is found in the nucleus
Electron
An atomic particle with a negative charge that can be found in shells orbiting the nucleus
AMU
The unit invented to describe the mass of objects as small as an atom
Atomic Number
The number of protons in an atom which defines which of the many elements it is
Atomic Mass
The total weight of the entire atom of the element that the atomic mass is describing. Approximately equivalent to the sum of the protons and neutrons due to the fact that the electrons are of minuscule mass.However, the atomic mass may not always be correct due to the fact that one must keep isotopes in mind.
Element
A single unique type of atom with its own atomic number.Currently there are 118 elements.Look towards the periodic table deck for more information.
Compound
Compounds are two elements that are CHEMICALLY BONDED rather than simply added together.A compound differs from a mixture due to that fact.
Electron shells
The shells inside which electrons are contained.The amount of them can be determined by the period of the row on the periodic table.
Periodic Table
Invented by Dmitri Mendeleev the periodic table is a helpful tool in chemistry.It depicts the various different elements positioned according to atomic number, group(orbitals) as well as period(amount of electron shells) and the actual group(eg Noble Gases,Lanthanides Alkali Earth Metals)
Alchemist
Olden-day chemists who mixed chemicals and tried to turn ordinary metals into gold.They also made attempts to see the future.
Investigation
Activity aimed at finding information
Observations
Information obtained by the use of our senses or measuring instruments