Elements and Atoms 11/7/11Write the question and answer in completesentences!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?
Activating Strategy1.What is the BIGGEST thing you can think of?2. What is the smallest thingyou can think of?
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 matter2. Describe the structure of an atom3. Use the periodic table to predict atomic structure
Atoms are the building blocks of matter.ProtonNeutronElectron
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
Atoms are the building blocks of matter.Proton Positively In the charged particle + nucleusNeutron An uncharged In the particle 0 nucleusElectron Negatively In the charged electron particles that move around cloud the nucleus
HOW DO WE TELL ONE TYPE OF ATOM FROM ANOTHER?TURN TO PAGE R58 and R59 in the back of the book
The Periodic Table: List if ingredients use to make EVERYTHING on Earth
Smaller # = 7 # of protons in theElement nucleus Symbol N Nitrogen 14
1. I have 27 protons. What am I?2. I have 2 protons. What am I? SUMMARIZER3. 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!
LEQ: How can we determine the structureof an atom using the periodic table?1. What is an atom?2. What are the three particles (or parts) that atomsare made of?3. What is the difference between a proton and aneutron?4. What is the difference between a proton and anelectron?5. What particles make up the nucleus of an atom?
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)
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
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?
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)
Elements 11/8/11• Element: The most basic form of matter on Earth.• Everything on Earth is made of 1 or more Elements
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 cookiesJordan has 23 cookies
Atomic Number (# of protons 7 in theElement nucleus) Symbol N Nitrogen 14.01
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)
In NORMAL ATOMS….# of protons = # of electronsLet’s practice:Boron: 5 electronsHelium: 2 electronsCarbon: 6 electrons
Let’s try it…. 4Atomic Mass: 9.012Rounded At. Mass: 9 BeAtomic Number: 4 Beryllium 9 9.012 4 Number of Protons: 4 5 Number of Neutrons: 5
Identifying Elements 9 4 Be F Fluorine Beryllium 18.998 9.014protons= protons=electrons = electrons =neutrons = neutrons=
Identifying Elements 9 4 Be F Fluorine Beryllium 18.998 9.014protons= 4 protons= 9electrons = 4 electrons = 9neutrons = 5 neutrons= 10
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?
THEY HAVE AN EQUALNUMBER OF PROTONS AND ELECTRONS!
Experiment: Drawing Atoms 31. Draw a circle2. Look at the atomic Li Lithium number, draw that many protons in the center 6.9413. Draw the same amount of electrons around the outside4. Round the atomic mass #5. Subtract atomic # from atomic mass #
Practice• Draw the Atom of Copper (Cu)• Draw the Atom of Carbon (C)• Draw the Atom of Neon (Ne)
Periodic Table: Independent PracticePg. R58 and R59 (back of the book!)
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.
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.
Energy Levels: hold electrons with the sameamount of energy1st Energy Level 2nd3rd
Drawing Electrons and Energy Levels: HeliumProtons: 2 WHAT NUMBERNeutrons: 2 ROW IS IT IN?! 1Electrons: 2
Drawing Electrons and Energy Levels: BORONProtons: 5 WHAT NUMBERNeutrons: 6 ROW IS IT IN?! 2Electrons: 5
DRAW YOUR OWN!Pick THREE elements and draw models of each ofthem. You must choose ONE element from the firstenergy level, ONE from the second energy level, andONE 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
Summarizer:In 3-5 sentences, EXPLAIN how we can use theperiodic table to determine the structure of anatom.YOUR ANSWER MUST INCLUDE THESE WORDS: PROTON ATOMIC MASS NEUTRON ATOMIC NUMBER ELECTRON ENERGY LEVEL
Pass out Periodic Charts• Pass out Periodic Charts