Build An Atom Chemistry Sheet, Cheat Sheet of Chemistry

Download Build An Atom Chemistry Sheet and more Cheat Sheet Chemistry in PDF only on Docsity! BUILD AN ATOM PART I: ATOM SCREEN Build an Atom simulation (http://phet.colorado.edu/en/simulation/build-an-atom) 1. Explore the Build an Atom simulation with your group. As you explore, talk about what you find. 2. a) List two things your group observed in the simulation. The periodic table is listed in the simulation. You can change the simulation to a different model type. b) What particle(s) are found in the center of the atom? Protons and neutrons 3. Play until you discover which particle(s) determine(s) the name of the element you build. What did you discover? Everytime I put a subatomic particle on my model, it gives me a different type of element. (Depending on the amount I put). 4. What is the name of the following atoms? a) An atom with 3 protons and 4 neutrons: Lithium b) An atom with 2 protons and 4 neutrons: Helium c) An atom with 4 protons and 4 neutrons: Beryllium 5. Play with the simulation to discover which particles affect the charge of an 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. b) Develop a relationship (in the form of a single sentence or equation) that can predict the charge based on the number and types of particle. Number of protons and electrons 6. Play with the simulation to discover what affects the mass number of your atom or ion. BUILD AN ATOM 1 a) What is a rule for determining the mass number of an atom or ion? Protons and neutrons determine the mass of an atom or ion. 7. Practice applying your understanding by playing 1st and 2nd levels on the game screen. PART II: SYMBOL SCREEN 8. 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: ● the particle(s) used to determine the letter, and ● how the value of each letter is determined. 9. Create a definition (using a complete sentence) for each of these items based on your labels from the atomic symbol above. a) Element Symbol - The letter that represents the element. b) Charge - The number of protons in the nucleus differs from the number of electrons surrounding the nucleus. c) Atomic Number - How many protons are in the nucleus. d) Mass Number - Represents the number of protons. 10. Practice applying your understanding by playing the 3rd and 4th game levels. Play until you can get all the questions correct on the 4th level. 11. In addition to atomic symbol, we can represent atoms by name and mass number. a) Complete the table below: Symbol Name Carbon-12 2 BUILD AN ATOM