Chapter 4 Section 4.1 & 4.2 Defining the Atom & Structure of the Nuclear Atom.
Chapter Six: The Atom
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Transcript of Chapter Six: The Atom
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Chapter Six: The Atom
• 6.1 Fundamental Particles and Forces
• 6.2 Electrons in the Atom
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What is matter made from?
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Water is matter made from 3 atoms.
2 Hydrogen atoms and 1 Oxygen atom
H2O H2O
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What is an atom?
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What is an atom?
• Atoms are the smallest form of matter.
• Each element has a different kind of atom
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What are atoms made of?
• Protons (+)
• Neutrons (0)
• Electrons (-)
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What is in the center of an atom?
Protons and Neutrons in the nucleus
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What is surrounding the nucleus?
Electrons
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Which part has the least mass?
• Electrons
• Protons and Neutrons are big in comparison
Neutron
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What keeps the electrons from flying off?• Electrons are bound to
the nucleus by the attractive force between electrons (-) and protons (+).
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List the charges
Protons-- positive (+)
Electrons--negative (-)
Neutrons--no charge (0)
(neutral)
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Question 1
What part of the atom has no charge and is found in the nucleus?
NEUTRON
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Question 2
The number of protons and electrons in an atom are the same. (T/F)
TRUE
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Question 3
Neutrons are about the same size as _________.
PROTONS
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Question 4
An atom could be described as:
Electrons in the center with protons in random patterns around them. (T/F)
FALSE
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Question 5
If an atom has 7 protons how many electrons will it have?
7
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Atoms, Elements and the Periodic Table
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Each element on the Periodic Table has it’s own unique atom
Atom #2 Atom #20
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How are atoms of different elements different?
The atoms of different elements contain different numbers of protons in the nucleus.
helium=2 protons calcium=20 protons
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What is the atomic number?
Because the number of protons is so important, it is called the atomic number.
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How many protons does Oxygen have?
Protons
Atomic mass
EIGHT
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Question 6
The atomic number is the number of ___________.
PROTONS
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Question 7
All gold atoms have the same number of ______________.
PROTONS
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Question 8
What is the atomic number of potassium?
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Question 9
In a Silver atom with a mass number of 108 and an atomic number of 47, what is
the number of protons?
47
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Question 10
How many electrons does an atom of Nitrogen have?
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The Atom Board
• What is inside an atom?
The Atom
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Make an atom with 5 protons
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Make Lithium (Li)
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Make Beryllium (Be)
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Make a Helium (He) atom with a mass of 4.
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Make a atom with 6 electrons.
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