1 - Build An Atom Part 1（副本） PDF

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Just play aroud, this is not the real note....

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Build An Atom - Part 1 Learning Goals: Students will be able to 1. Make atom models that show stable atoms or ions. 2. Use given information about subatomic particles to a. Identify an element and its position on the periodic table b. Draw models of atoms c. Determine if the model is for a neutral atom or an ion. 3. Predict how addition or subtraction of a proton, neutron, or electron will change the element, the charge, and the mass of their atom or ion. 4. Describe all vocabulary words needed to meet the goals. 5. Use a periodic symbol to tell the number of protons, neutrons, and electrons in an atom or ion. 6. Draw the symbol for the element as you would see on the periodic table Directions: 1. Explore the simulation for a few minutes. a. List two things you and your table partner observed. i. PT ii. Protons, neutrons, electrons iii. Using play with the parts of atoms to find … b. What particles are found in the center of the atom? Protons and neutrons, c. What is the center called, use a vocabulary term? Atom cell d. Everything around us is made up of different elements. The air has Oxygen and Nitrogen. Plants and people have lots of Carbon. Helium is in balloons. Hydrogen is in water. e. Play until you discover which particle(s) determine(s) the name of the element you build. What did you discover? The different number of proton can make up different atom f. Test your idea by identifying the element for the 3 cases. Write down the information you use to determine the element. (make the elements below and tell me what element it is) example 1

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Atom or Ion has # of protons: 6 # of neutrons: 6 # of electrons: 6 # of protons: 7 # of neutrons: 6 # of electrons: 6 # of protons: 6 # of neutrons: 7 # of electrons: 7

What Element is it? C

N

C

4. Play until you discover a trend/pattern to show particles affect the charge of your atom or ion. a) Fill in the blanks below to show your results: Neutral atoms have the same number of protons and electrons. Positive ions have more protons than electrons. Negative ions have less protons than electrons.

5. In your own words define in general what in ion is ion is made when more proton than electron, or more electron than proton. 6. Use the table below to identify three examples of atoms and ions (1 with neutral charge, 1 with a positive charge, and 1 with a negative charge) that show your rules for charge work and include a drawing of your atom. (All of your examples should also have a stable nucleus.) What is in your atom or ions?

Neutral Charge atom

Positive Charged Ion

Draw the ONLY ELECTRONS on the atom or ion

What is the charge? Make all tron be the same number

# of protons: 2 # of neutrons: 2 # of electrons: 2

Add more proton

# of protons: 3 # of neutrons: 2 # of electrons:2

Is it a neutral atom, positive ion, or negative ion? Neutral atom

Positive ion

negative ion Negative Charged Ion

Add more electron

# of protons: 2 # of neutrons: 2 # of electrons:3

7. Play until you discover a trend/pattern about the mass number of an atom or ion. a. Looking at the Bohr model, how can you determine the mass number? Mass change only when you change proton or neutron 8. Figure out what happens to the atom when you change the particles below. Start by making a stable atom and then change the following to fill in the table below. Make the change: What did you change the name, the charge or the mass? Add a proton It will change the name, the charge and the mass Remove a neutron It will change the mass Remove an electron It will change the charge Add an electron It will change the charge 8.

: Try these with your table partner.

Design a positive ion with a charge of +2

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Design neutral, stable atom with a mass of 9

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NOP: 3 NON:1 NOE:1

NOP: 3 NON: 6 NOE:1

What element is your ion? Li What mass is your ion? 4

What element is your atom?Li What is the charge of you atom? positive

9. Using the Symbol readout box, figure out which particles affect each component of the atomic symbol. a. In the atomic symbol below, label each letter ( a, b, c, and d) with: i. the particle(s) used to determine the letter ii. how the value of each letter is determined(found)

10. Create a definition (using a complete sentence) for each of these items based on your labels from the atomic symbol above. a. Element Symbol : a b. Charge: b c. Atomic Number : d d. Mass Number : c 11. In addition to atomic symbol, we can represent atoms by name and mass number. a. Complete the table below:

12. Play with the simulation to determine (Make sure you have checked the stable/unstable box): a. Which particles affect the stability of the atom? Proton and Neutron will affect the stability of the atom b. Which particles do not affect the stability of the atom? Electron. 13. What are the names of the stable forms of oxygen? a. Oxygen-16 (this is an example, completed for you!) 11/15/2015 Loeblein/Perkins

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b. Oxygen-15 c. Oxygen-14 d. List all of the things that are the same about these atoms/isotopes (ignore the electrons). Have same number of proton. The type of element is same. e. List all of the things that are different about these atoms/isotopes (ignore the electrons). Have different number of neutron. The mass of the atom changed. 14. The atoms in the previous question are isotopes of each other. Based on this information, list the requirements for two atoms to be isotopes of each other. ____________________________________________________________________________________________________________________ 15. Test your understanding of isotopes by examining the relationships between the pairs of atoms listed below:

Answer is choose by white

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16. The periodic table has a great deal of information about every atom. Using your periodic table, answer the following questions: a. What is the atomic number of chlorine (Cl)? 17 b. What is the atomic number of tungsten (W)? 74 c. How many protons are there in any Cl atom? 17 d. How many protons are there in any Te atom? 52 e. Can you tell from the periodic table exactly how many neutrons are in an atom? No. you can't tell from the periodic table exactly how many neutrons are in an atom?

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