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Transcript of Periodic Table-Atoms
Periodic Table: Definitions
Parts of an Atom
Determine that all atoms of the same element are similar to but different from atoms of other elements
Recognize that elements with the same number of protons may or may not have the same charge
Define ions and describe them in terms of the number of protons, electrons and their charges
What is a Proton?
Found in the "nucleus" of an atom.
A subatomic particle that has a net positive charge +1
The number of protons is equal to the atomic number of an element
Determines the element.
Found in nucleus of an atom
Atoms may have different numbers of neutrons in their nucleus. These are called isotopes
Neutrons have no net charge, hence the name
Similar in size to a proton
Found in space around the nucleus containing the protons and neutrons
Electrons have a net negative charge (-1)
Extremely small, extremely fast
1/1836 the size of a proton
Orbital rings (2, 8, 18)
Introduced by Niels Bohr in 1913
Depicts the nucleus and the electrons orbiting the nucleus as planets do. (not entirely accurate in reality!!!)
Depicts orbital rings of electrons
- Atoms of the same element are similar to atoms of the same element
-Atoms of element (A) are not the same as the atoms that make element (B)
- Hydrogen is the most abundant element in the universe.
What is the amount of molecules that make up an object called?
What is the amount of space an object takes up?
What is how far something is?
What are the four states of matter?