Atoms and Periodic Table will
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What is a Proton?
A positive charge and is in the nucleus.
What is a Nucleus?
The nucleus is in the center of a cell and has neutrons and protons.
What is a neutron?
Has no charge and in the nucleus.
What is an electron?
Has a negative charge and is outside of the nucleus.
What is an orbital?
A place in the atom where it is easy to find a electron.
What is a Valance Electron?
A electron which is in the farthest shell from the atoms nucleus and determines the chemical properties of the atom.
What is the periodic law?
States the properties of the element are periodic functions of their atomic numbers.
What is a period?
Organization From top to bottom
What is a group?
Organization from left to right
What is a metal?
What most of the elements are
What is a nonmetal?
Something that is not a metal
What is a semiconductor?
A little like metals and a little not
What is a alkali metal?
Metals in group 1
What are alkaline-earth metals?
Natural metals in group 2
What are transition metals?
Metals that can be changed physically and chemically
What is a halogen?
Most reactive non metals
What is a noble gas?
Gases with low reactivity and are helium, neon, argon, krypton, xenon, and radon.
What is an ion?
An atom with an electric charge because of a lose or gain of one or more electrons
What is the atomic number?
Number of electrons and neutrons
What is the mass number?
Atomic mass says how much the element weights
What is an isotope
L
What is the atomic mass unit
L
What is the average atomic mass
L
What is a mole?
A way to count very large numbers like the numbers of atoms