DO NOT WRITE ON THIS PAPER Answer these questions in your SPIRAL NOTEBOOK. # 9 BUILD AN ATOM: Post-lab questions

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1 *****DO NOT WRITE ON THIS PAPER***** Answer these questions in your SPIRAL NOTEBOOK # 9 BUILD AN ATOM: Post-lab questions MAS = 8 ADV = 7 MTS = 6 APP = 4-5 BEG = 0-3 For questions 1-5: You build an atom that has the following components: 3 protons P 4 neutrons N 3 electrons E 1. Draw a picture of your atom. 2. Write the symbol of the element this atom is using the periodic table below: 3. The mass of this atom is: a. 3 mass units b. 4 mass units c. 6 mass units d. 7 mass units e. 11 mass units 4. Explain your answer for #3. 5. The charge of this atom is: a. 0, this is a neutral atom b. -3 c. -1 d. +1 e. +3

2 For questions 6-8: Write the letter of ALL correct answers (there may be more than one). 6. If you want to change the type of element your atom is, you can either: a. Add a proton b. Add a neutron c. Add an electron 7. If you want to change the charge of your atom, you can either: a. Add a proton b. Add a neutron c. Add an electron 8. If you want to change the mass of your atom, you can either: a. Add a proton b. Add a neutron c. Add an electron

Last name: First name: Date: Period: Build an Atom I-PAD INQUIRY COM INC COM* Learning Objectives: Use inquiry to explore the following about atoms: structure, mass, charge, and stability.

4 Last name: First name: Date: Period: Build an Atom I-PAD INQUIRY COM INC COM* Learning Objectives: Use inquiry to explore the following about atoms: structure, mass, charge, and stability. Directions: 1. Go to Click on ASSIGNMENTS then Quarter 1. Click the green button on the right hand side near the top of the page. 2. Be sure the following are checked: a) Net Charge b) Mass Number c) Stable/Unstable 3. Explore the simulation. As you play with the parts of the atom, answer the questions below. 1) parts go in the center of the atom? 2) How many electrons fit in the first shell (circle)? 3) Play around, and write down 2 examples of atoms that have a stable nucleus and include a drawing of your nucleus. Number of particles in your nucleus: Draw your nucleus element is it? ) do you notice about atoms that have an unstable nucleus?

5 5) Build the atom as instructed for each case below. Then fill in the required information Particles Protons: 6 Neutrons: 6 Electrons: 6 Protons: 7 Neutrons: 6 Electrons: 6 Protons: 6 Neutrons: 7 Electrons: 7 Element? Determines the Element? Proton Neutron Electron Proton Neutron Electron Proton Neutron Electron Circle the Element 6) particle (proton, neutron, or electron) determines the name of the element that you build? Try to figure this out as you play with different combinations. 7) Make a stable neutral, positive, and negative HELIUM ATOM. (These examples should be consistent with the rules you discovered above.) Draw your atom below Neutral + Ion - Ion a) did you do to change the charge of your helium atoms above? 8) affects the charge of an atom or ion? (Hint: look at your examples above) is a rule for making: b) A neutral atom (one with 0 extra charge) c) A positive (+) ion (one with extra positive charge) d) A negative (-) ion (one with extra negative charge)

6 9) Experiment with changing the mass of an atom or ion. e) Which particles are heavy? and f) Which particles are light? (basically have no mass) g) is the rule for determining the mass of atoms? 10) Using all of the rules you determined above, predict what changes for each of the specified actions to an atom or ion. Test your prediction with the simulation. Re-write your rules as needed after testing your prediction. Add a Proton Remove a Neutron Remove an Electron An an Electron

7 Finish early? Try these EXTRA CHALLENGES! Design a positive ion with a charge of +2: Particles Properties Element: Mass: Charge: Stable Nucleus: Yes No Design a neutral, atom with a mass of 8: Particles Properties Element: Mass: Charge: Stable Nucleus: Yes No

DO NOT WRITE ON THIS PAPER Answer these questions in your SPIRAL NOTEBOOK. BUILD AN ATOM: Post-lab questions

*****DO NOT WRITE ON THIS PAPER***** Answer these questions in your SPIRAL NOTEBOOK BUILD AN ATOM: Post-lab questions For questions 1-5: You build an atom that has the following components: 3 protons P