The periodic table can be used to determine the structure of an atom. The atomic number indicates the number of protons in the nucleus, while the atomic mass provides the total number of protons and neutrons. By subtracting the atomic number from the atomic mass, we can calculate the number of neutrons. The periodic table also shows the arrangement of elements by increasing atomic number and energy levels which indicate where electrons are located around the nucleus.
There are several misconceptions about the valence shell of the atom. The key questions that arise in the minds of the learners are:
Is valence shell really the outermost shell?
2. Are there only seven shells in an atom?
3. When shells are supposed to be made up of subshells, why can we not represent the subshells in the valence shell structure of the atom?
4. When electrons are said to occur in orbitals, why can we not indicate the orbitals in the valence shell structure?
4. How can we represent the origins for valance band and conduction band in the atomic structure?
5. What are some good metaphors for the core of the atom and the rest of the atom?
Here is a lesson created by Chemistry teachers to address these misconceptions.
There are several misconceptions about the valence shell of the atom. The key questions that arise in the minds of the learners are:
Is valence shell really the outermost shell?
2. Are there only seven shells in an atom?
3. When shells are supposed to be made up of subshells, why can we not represent the subshells in the valence shell structure of the atom?
4. When electrons are said to occur in orbitals, why can we not indicate the orbitals in the valence shell structure?
4. How can we represent the origins for valance band and conduction band in the atomic structure?
5. What are some good metaphors for the core of the atom and the rest of the atom?
Here is a lesson created by Chemistry teachers to address these misconceptions.
Maruthi Prithivirajan, Head of ASEAN & IN Solution Architecture, Neo4j
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Paper presented at SYNERGY workshop at AVI 2024, Genoa, Italy. 3rd June 2024
https://alandix.com/academic/papers/synergy2024-epistemic/
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CI/CD with in UiPath
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Speaker:
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- A fully editable and extendable library for grid component modelling;
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Elements and Atoms
1. Elements and Atoms 11/7/11
Write the question and answer in complete
sentences!
1. Ice and water break down a rock. What type of
weathering is this?
2. What are convection currents?
3. How do convergent boundaries move?
4. Why is the earth divided into layers?
5. Write down today’s LEQ: How can we determine
the structure of an atom using the periodic table?
7. Today’s LEQ: How can we determine
the structure of an atom using the
periodic table?
By the end of today, you should be able to…
1. Explain that atoms are the basic building blocks of
matter
2. Describe the structure of an atom
3. Use the periodic table to predict atomic structure
17. Atoms are the building blocks of matter.
Proton
Neutron
Electron
18. Fill in your own Graphic Organizer! (pg. 11D)
Positively
charged particle
In the nucleus In the nucleus
Negatively charged
particles that move
around the nucleus
In the An
electron uncharged
cloud particle
19. Atoms are the building blocks of matter.
Proton Positively In the
charged
particle
+ nucleus
Neutron An uncharged In the
particle 0 nucleus
Electron Negatively In the
charged
electron
particles that
move around cloud
the nucleus
20. Let’s draw ATOMIC STRUCTURE
an atom!
(3 minutes)
30. Smaller #
=
7 # of protons
in the
Element nucleus
Symbol N
Nitrogen
14
31. 1. I have 27 protons. What am I?
2. I have 2 protons. What am I? SUMMARIZER
3. I have 46 protons. What am I?
4. I have 79 protons. What am I?
5. I have 8 protons. What am I?
6. I am calcium. How many protons do I have?
7. I am silver. How many protons do I have?
8. I am neon. How many protons do I have?
9. I am potassium. How many protons do I have?
10. I am iron. How many protons do I have?
11. I am nitrogen. Draw a picture of my nucleus!
32. LEQ: How can we determine the structure
of an atom using the periodic table?
1. What is an atom?
2. What are the three particles (or parts) that atoms
are made of?
3. What is the difference between a proton and a
neutron?
4. What is the difference between a proton and an
electron?
5. What particles make up the nucleus of an atom?
33. BLING BLING
• Gucci Mane wore a white gold necklace to
the awards show. Nelly wore a platinum
necklace. Both necklaces were blinged out.
What’s the difference?? (Both metals are different
Elements)
35. Math???
• When rounding in Math, how do you know if a
number should round UP or DOWN?
Below .5 Round DOWN
.5 and Above Round UP
36. Math??
Practice these math problems
• Round 5.4 to the nearest whole number
• Round 2.2 to the nearest whole number
• Round 10.7 to the nearest whole number
• Round 22.5 to the nearest whole number
• What is 10-3?
• What is 17-5?
• What is 22-6?
• What is 14-7?
37. Math??
Practice these math problems
• Round 5.4 to the nearest whole number (5)
• Round 2.2 to the nearest whole number (2)
• Round 10.7 to the nearest whole number (11)
• Round 22.5 to the nearest whole number (23)
• What is 10-3? (7)
• What is 17-5? (12)
• What is 22-6? (16)
• What is 14-7? (7)
38. Elements 11/8/11
• Element: The most basic form of
matter on Earth.
• Everything on Earth is made of 1
or more Elements
39. EXPLAIN TO A 3rd Grader:
How would we solve this word problem?
Together, Juan and Jordan have a total
of 48 cookies. Juan has 25 cookies.
How many cookies does Jordan have?
TOTAL: 48 cookies
Juan: 25 cookies
Jordan has 23 cookies
40. Atomic Number
(# of protons
7 in the
Element nucleus)
Symbol N
Nitrogen
14.01
41. Identifying Elements
• Each element has a different number of
Protons
Protons = Atomic Number
Electrons = number of Protons
Neutrons = Atomic Mass
Number - Atomic
Number
( Bottom - Top)
42. In NORMAL ATOMS….
# of protons = # of electrons
Let’s practice:
Boron: 5 electrons
Helium: 2 electrons
Carbon: 6 electrons
48. Let’s try it…. 4
Atomic Mass: 9.012
Rounded At. Mass: 9 Be
Atomic Number: 4 Beryllium
9 9.012
4
Number of Protons: 4
5 Number of Neutrons: 5
49.
50. Identifying Elements
9
4
Be F
Fluorine
Beryllium
18.998
9.014
protons= protons=
electrons = electrons =
neutrons = neutrons=
51. Identifying Elements
9
4
Be F
Fluorine
Beryllium
18.998
9.014
protons= 4 protons= 9
electrons = 4 electrons = 9
neutrons = 5 neutrons= 10
52. HOT Q: Atoms like to have a
total charge of 0 (or neutral).
Knowing that atoms have both
positive and negative particles
(protons and electrons), how can
they have a total charge of 0?
53. THEY HAVE AN EQUAL
NUMBER OF PROTONS
AND ELECTRONS!
54. Experiment: Drawing Atoms
3
1. Draw a circle
2. Look at the atomic Li
Lithium
number, draw that many
protons in the center
6.941
3. Draw the same amount
of electrons around the
outside
4. Round the atomic mass #
5. Subtract atomic # from
atomic mass #
55. Practice
• Draw the Atom of Copper (Cu)
• Draw the Atom of Carbon (C)
• Draw the Atom of Neon (Ne)
58. LEQ: How can we determine the structure
of an atom using the periodic table?
• The 3 particles in an atom are:
– 1.
– 2.
– 3.
• Atomic Number =
• Atomic Mass Number =
• The number of ________ in a certain atom never
change.
60. New Material
• The Periodic Table is a way of organizing the
elements.
• The elements are organized by 1)increasing
atomic number and 2)similar chemical
properties.
• Atomic mass: the average mass of all the
element’s isotopes.
62. Energy Levels: hold electrons with the same
amount of energy
1st Energy Level
2nd
3rd
63. Drawing Electrons and Energy Levels: Helium
Protons: 2 WHAT NUMBER
Neutrons: 2 ROW IS IT IN?! 1
Electrons: 2
64. Drawing Electrons and Energy Levels: BORON
Protons: 5 WHAT NUMBER
Neutrons: 6 ROW IS IT IN?! 2
Electrons: 5
65. DRAW YOUR OWN!
Pick THREE elements and draw models of each of
them. You must choose ONE element from the first
energy level, ONE from the second energy level, and
ONE from the third energy level.
BE SURE TO:
LABEL each element you draw
DRAW “+” signs in your protons
INCLUDE the correct number of protons,
neutrons, electrons
DRAW electrons in their correct energy
level
66. Summarizer:
In 3-5 sentences, EXPLAIN how we can use the
periodic table to determine the structure of an
atom.
YOUR ANSWER MUST INCLUDE THESE WORDS:
PROTON ATOMIC MASS
NEUTRON ATOMIC NUMBER
ELECTRON ENERGY LEVEL