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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?
ATOMS!
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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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Neutrons are about the same size as _________. PROTONS
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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If an atom has 7 protons how many electrons will it have? 7
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 # 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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The atomic number is the number of ___________. PROTONS
Question 6 The atomic number is the number of ___________. PROTONS
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All gold atoms have the same number of ______________. PROTONS
Question 7 All gold atoms have the same number of ______________. PROTONS
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What is the atomic number of potassium?
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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How many electrons does an atom of Nitrogen have?
Question 10 How many electrons does an atom of Nitrogen have?
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The Atom Board The Atom What is inside an 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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