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Week 6 Bell Ringers Monday 10.6.2014

Week 6 Bell Ringers Monday 10.6.2014. 2 bottles are on a shelf in a chemistry lab . Both contain a shiny yellow metal. Bottle A is labeled Au( s ) . Bottle B is labeled FeS 2 ( s ) . What do you think the symbols on the bottles mean? Do you think both bottles contain gold? Why or why not?.

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Week 6 Bell Ringers Monday 10.6.2014

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  1. Week 6 Bell RingersMonday 10.6.2014 2 bottles are on a shelf in a chemistry lab. Both contain a shiny yellow metal. Bottle A is labeled Au(s). Bottle B is labeled FeS2(s). What do you think the symbols on the bottles mean? Do you think both bottles contain gold? Why or why not?

  2. Set up your Cornell Notes! • Set up your Cornell note sheet EXACTLY like the model  • Remember, you should ONLY be taking notes on the RIGHT HAND SIDE! • Questions/ Summaries are to be done AFTER notes are finished! Name Chemistry ___ Date Topic: Chemical Names & Symbols Essential Question: Objective: IWBAT… Notes Questions

  3. Topic: Chemical Names & Symbols EQ: What do chemical names and symbols tell you about matter? Objective: IWBAT Define the terms element, compound, and aqueous Understand some basic chemical formulas and symbols

  4. The Language of Chemistry… Some chemical names are used daily– like iron and aluminum. Other names are used mainly by chemists– such as sodium chloride for salt and calcium carbonate for chalk • All matter in the universe either is an element or is made of some combination of elements. • Remember…matter is a word chemists use to refer to all the materials and objects in the world

  5. Vocabulary! • Element: A unique substance that cannot be broken down into simpler substances. They are the building materials of all matter. ex) Au (gold) • Compound: A pure substance that is a chemical combination of two or more elements in a fixed ratio. Ex) NaCl (salt)

  6. Here are some elements you may have heard of… Remember…ALL matter is made of up of elements or compounds, or mixtures of these!

  7. Chemical Symbols • Chemical symbols represent the elements. Each element has either a one- or two-letter symbol. The first letter is always uppercase; the second letter is always lowercase.

  8. What is a chemical formula? • The first letter of an element’s symbol is always uppercase, and if there is a second letter it is always lowercase. • Compounds are represented by chemical formulas. Chemical formula: A combination of symbols and subscripts that indicates the number and types of elements in a compound.

  9. Here is a chemical formula Symbol for sulfur Symbol for oxygen Symbol for copper Subscript for oxygen Copy down the ENTIRE example, Make sure you draw your arrows in the correct places

  10. Discussion Notes (cont.) • Some common groupings of elements have their own specific names. • Substances come in different physical forms, called phases. • Phase: The physical form a substance is in, such as solid, liquid, or gas. Phase is greatly influenced by temperature. • Aqueous: A substance is aqueous when it is dissolved in water.

  11. Wrap Up • The symbols (s), (l), (g), and (aq) indicate the physical form or phase of a substance and whether it is dissolved in water. • (s) = Solid • (l) = Liquid • (g)= Gas • (aq)= Aqueous Please write this down if you believe you can not remember what each letter stands for!

  12. Let’s check for understanding.. • Imagine that you find a vial labeled Na2SO4(aq). What does the label tell you about what is in this vial? Hint…look at the letters present– how many capital letters are there? What do those letters mean? What does (aq) mean?

  13. Let’s check for understanding.. • Imagine that you find a vial labeled Na2SO4(aq). What does the label tell you about what is in this vial? We know… • There are 2 sodium molecules (Na) • There is 1 sulfur (S) • There are 4 oxygen molecules (O) • It is a compound that is aqueous– it is dissolved in water

  14. Independent practice/ Hmwk • Describe the difference between an element and a compound. • What is meant by ‘physical form’? • How many diff. elements are in the chemical formula NaNO3? Name them! • What is the difference btwnNaOH (s) and NaOH(aq)? YES! You must write the questions!

  15. Week 6 Bell RingersTuesday 10.7.2014 Define the term “element” and give one example of a common element you come across on a daily basis. An element is… ***Take out Notes/ independent practice questions from yesterday! Will be checking during BR time!

  16. Let’s make sure we all got this.. • Describe the difference between an element and a compound. • What is meant by ‘physical form’? • How many diff. elements are in the chemical formula NaNO3? Name them! • What is the difference btwnNaOH (s) and NaOH(aq)? If you got an answer incorrect– CORRECT IT!

  17. Lets take a look at some elements and compounds! • You will be in your table groups of 3-5 students. • There will be 6 stations of 3 vials containing common elements and compounds • You will complete Part 1: Observations while looking at the glass vials and rotating through the stations. • DO NOT OPEN ANY OF THE VIALS– IF SO, YOU WILL NOT BE ALLOWED TO COMPLETE ANY LABS OR HANDS ON ACTIVITIES!

  18. PART 1 : OBSERVATIONS • Fill in the chart as you are rotating through the stations • When my alarm goes off you MUST move on to the next station! : Description– what does the element/compound look like? • Color? Be SPECIFIC! • Blue? Green? Bluish-green? Turquoise? Off-white? • Phase Solid? Liquid? Gas? • Describe it further! • Powder? Crystals? Small chunks?

  19. PART 2 : Cracking the Code • What patterns do you notice? • Think about EACH section of the table! • What do all the vials with an (s) have in common? • Are there any elements repeated but look different? Answer ALL questions EXCEPT #8 on the back of your handout! What is not finished in class will be homework!

  20. Week 6 Bell RingersWednesday 10.8.2014 Describe when a substance becomes an “aqueous” solution. Take out Yesterday’s assignment! You have until bell ringer time is over to finish any unanswered questions. Remember to SKIP #8

  21. PART 2 : Cracking the Code All questions should be done CORRECTLY! Check your #3 3) a. sulfate  SO4 b. nitrate NO3 c. hydroxide OH

  22. New Vocabulary • Chemical Reaction (or Chemical Change) You can tell when a chemical rxn occurs because there is evidence of a new substance forming. (ex. Color change) After a chemical rxn you have new substances w/ properties that are different from the starting substances.

  23. Copper Cycle • While watching the YouTube video of the copper cycle, please feel in your observation chart. • You should write down any major changes your notice– does the mixture change colors? Does any new substance form? Ect. • : http://www.youtube.com/watch?v=tyrne4AFOvY

  24. Independent Practice/ Hmwk #1 A. Is there a chemical change? B. Is rust an element or a compound? There is evidence of a new substance being formed on the surface of the nail. There is a color change and the rust is softer than iron– so a chemical change has occurred COMPOUND! Combination of the iron from the nail plus one or more elements from the air or water.

  25. Independent practice cont. • Finish the rest of questions!

  26. Week 6 Bell RingersThursday 10.9.2014 What do you think happened to the copper powder in the copper cycle experiment when it was mixed with the nitric acid? Look at your handout from yesterday!!!! QUIZ TOMORROW!

  27. Pg. 35 Conservation of Matter Topic: Conservation of matter Take Cornell notes from pg. 35- 36 UNDERLINE bold words Answer questions: 1 & 2 (pg. 37) ***You may add this to your notes from Monday!

  28. Week 6 Bell RingersFriday 10.10.2014 Matter cannot be created or destroyed. List at least two long-term impacts that this concept has for us on this planet. Bell Ringers are due TODAY!

  29. Quiz Today!

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