Copy of 3.04 Elements, Molecules, and Reactions PDF

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Summary

Now that you have learned about the impact of World War I on different groups of Americans at home, reflect on the treatment and impact on each group. Complete the chart using the information presented in the lesson. Be sure to respond in complete sentences....

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Submit as S1 Assessment 16 3.04 Elements, Molecules, and Reactions In this activity you will be exploring the difference between an element, a compound, and what factors influence the rate of reaction. Part 1 1. Go to PhET Build a Molecule Simulator (click here) 2. Click “Single” 3. Using the resources provided, fill in the Collection 1 Molecules. You can drag and drop items on the screen. Completely fill in three collections (all four blanks on the side) 4. What is the difference between an atom, element, and a molecule? You might need to review the lesson for this information. A molecule is 2 or more atoms bonded together, A element is made up of one type of atom, and a atom is chemical element 5. Now click on “Multiple” at the bottom. Like before, completely fill in three collections. 6. What do the little numbers (subscript) mean in the different molecules? They tell you how many atoms are in the molecule 7. What do the big numbers in front (coefficients) mean? They multiply all the atoms in a formula 8. How do you know which element the little number (subscript) goes with? By the number of atoms of that element 9. 3CH4 and C3H12 have the same number and kind of elements. How are they different? Feel free to use the “Playground” tab to complete this.

10. Now click “Playground” and use the simulator to complete the table below. Chemical Formula C3H8NCl

See below for Part 2

Number and kind of element

Draw it

Part 2 1. Go to Phet Reversible Reactions Simulation (click here). The link won’t work 2. Add in 5 of each A and B molecules 3. After observing for 10 seconds, what is happening to both the A and B molecules? Other observations?

4. Now Increase the temperature. What occurs after you increase the temperature? Do any of the As jump over and transform into Bs?

5. Now lower the temperature and then add 30 of each. Wait 10 seconds and then write down 3 observations. ● ● ● 6. Now increase the temperature again? What happens? With more As and Bs, are you getting more or less transformations (reactions)?

7. How do you think this relates to chemical reactions? As you increase the temperature of a substance, what will happen to the rate of reaction?

8. As you increase the concentration (more or less As and Bs) of a solution, what do you think will happen to the rate of reaction?

How does this relate to Toxicology and Forensic? 1. How do you think this knowledge about concentration, temperature and catalyst relates to Forensic Science and toxicology?...