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

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1 *****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 4 neutrons N 3 electrons E 1. Draw and label a picture of your atom. 2. Write the symbol of the element this atom is using the Periodic Table below or the one in your book (pp ): 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/remove a proton b. Add/remove a neutron c. Add/remove an electron 7. If you want to change the charge of your atom, you can either: a. Add/remove a proton b. Add/remove a neutron c. Add/remove an electron 8. If you want to change the mass of your atom, you can either: a. Add/remove a proton b. Add/remove a neutron c. Add/remove an electron

Last name: First name: Date: Period: Build an Atom 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 INQUIRY COM INC COM* Learning Objectives: Use inquiry to explore the following about atoms: structure, mass, charge, and stability. I-Pad or Chromebook #: 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) Make 2 different atoms with small nuclei (less than 4 protons). Play around so you end up with the same atom with both a stable and unstable nucleus. element is it? Number of particles in your STABLE nucleus: Draw your STABLE nucleus: Number of particles in your UNSTABLE nucleus: ) Looking at the information above, if an atom has an uneven number of protons and electrons, it is more likely to be STABLE / UNSTABLE (circle one).

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? Circle the Element 6) Looking at the information above, what particle determines the name of the element that you made? PROTON / NEUTRON / ELECTRON (circle one) 7) Make a stable neutral, positive, and negative HELIUM ATOM (2 protons). 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): A neutral atom has more than. c) A positive (+) ion (one with extra positive charge): A positive ion has more than. d) A negative (-) ion (one with extra negative charge): A negative ion has more than.

6 9) Experiment with changing the mass of an atom or ion. Look at the mass number and watch the scale as you add protons, neutrons, and electrons. a) is the mass of a proton? b) is the mass of a neutron? c) is the mass of an electron? d) is the rule for determining the mass of atoms? To find the mass, you add the number of and. 10) CHECK FOR UNDERSTANDING: Using all of the rules you came up with, 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 Add 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. # 9 BUILD AN ATOM: Post-lab questions

*****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