the atom and the periodic table. state standard spi 0807.9.9 use the periodic table to determine...
DESCRIPTION
OBJECTIVES I can identify the parts of an atom I can compare and contrast the relative masses of the different parts of an atom I can calculate atomic massTRANSCRIPT
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THE ATOM AND THE PERIODIC TABLE
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STATE STANDARD
SPI 0807.9.9 Use the periodic table to determine the properties of an element.
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OBJECTIVES
I can identify the parts of an atom I can compare and contrast the relative masses of the
different parts of an atom I can calculate atomic mass
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REPRESENTATION OF AN ATOM
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ELEMENT TILE
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STATE STANDARD
SPI 0807.9.9 Use the periodic table to determine the properties of an element.
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OBJECTIVES
I can calculate atomic mass correctly 8 out of 10
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Calculating Atomic Mass
APEAtomic# = #of Protons = #of Electrons
For Oxygen, O, the atomic # is 8
So, O has 8 Protons and 8 Electrons.
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Calculating Atomic Mass
MAN (Mass #)- (Atomic#)= ( # of Neutrons)
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Calculating Atomic Mass
Oxygen has an Atomic # of 8Therefore O has: 8 Protons 8 Electrons
To calculate # of Neutrons: First round the atomic
mass from 15.99 to 16 Then subtract the
number of Protons.
16 Mass # - 8 Atomic # 8 # Neutrons
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ISOTOPES
ISOTOPES are atoms that have the same number of protons but different number of neutrons.
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ISOTOPES
Isotopes of an element share the same chemical properties and most of the same physical properties.
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STATE STANDARD
SPI 0807.9.9 Use the periodic table to determine the properties of an element.
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OBJECTIVE
I CAN ACCURATELY DRAW THE BOHR ATOMIC MODEL FOR THE FIRST 20 ELEMENTS
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BOHR’S MODEL OF THE ATOM
Niels Bohr (1913): studied the light produced when atoms were excited by heat or electricity.
Bohr proposed that electrons are in orbits & when excited jump to a higher orbit. When they fall back to the original they give off light.
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BOHR’S MODEL OF THE ATOM
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BOHR’S MODEL OF THE ATOM
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BOHR’S ATOMIC MODEL
Bohr's model: -electrons orbit the nucleus like planets orbit the sun
Each orbit can hold a specific maximum number of electronsORBIT (n) MAX # OF
ELECTRONS1 22 83 184 32
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BOHR ATOMIC MODEL FOR NEON