Calculating the number of Protons, Neutrons, and Electrons.

Calculating the number of Protons, Neutrons, and Electrons.

Calculating the number of Protons, Neutrons, and Electrons. Using the atomic number and the mass number of an element square. The Atom Is about.. Anything that has matter/mass or takes up space. Made up of three subatomic particles (protons, neutrons, and electrons) Atomic Number Number of protons Used to determine what kind of

element/atom you have. Always a whole number Also, tells us the number of electrons in a neutral atom. Mass Number Equal to the number of protons + neutrons Equals the mass of the nucleus Decimal number

Round to a whole number to use Atomic Mass Average mass of all the isotopes for a certain atom. Same as the mass number (for this year) Mass can change because we can add or remove neutrons. Use the mass atomic number to solve for neutrons. Element Square Key 8

O Oxygen 15.999 Atomic Number Symbol Name of Element Atomic Mass Mass Number Atomic Weight Atomic Number = Protons and Electron Calculate Neutrons = Rounded Atomic Mass Atomic Number

EXAMPLE: 15.999 rounds to 16 so 16 8 = 8 Oxygen has 8 neutrons! #1 Symbol B Atomic Number Protons

Neutrons Electrons Atomic Mass #2 Symbol Atomic Number 11

Protons Neutrons Electrons Atomic Mass #3 Symbol Atomic

Number Protons 31 Neutrons Electrons Atomic Mass #4

Symbol Atomic Number Protons 31 Neutrons Electrons 37

Hint = Isotope Think about what number will be different Atomic Mass #5 Symbol Atomic Number Protons

89 Neutrons Electrons Atomic Mass #6 Symbol Atomic

Number Protons Neutrons Electrons Atomic Mass 207 More Practice

Complete the chart When complete you may color code the atoms on the back

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