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What are the different elements that makeup the following compounds? 1. H 2 SO 4 2. AlF 3 CaNa 2 3. K 2 Br SStarter: Write the question.
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Agenda: Starter Compound Formula Lab Exit
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PP ractice Students will first observe the substances in each test tube and record 2 observations for each. Test TubeObservation 1Observation 2 2 3 4 5 6
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PP ractice Students will examine Compounds and Elements matching cards. Students will try to match cards to the correct compounds to chemical formulas.
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PP ractice Draw the Compounds and Elements chart. Once you have checked with teacher for accuracy fill out correct answers. Common NameChemical NameChemical FormulaElements in Compound Exhaled Breath Water Table Salt Honey Chalk Sand
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A pply & C onnect 1. What is a way for you to remember the difference between elements and compounds? 2. Make a list of the elements used to make the compounds we talked about today. 3. Why would scientists work so hard to find new compounds like honey and table salt? E xit Write a half page reflection on what you learned today. Be sure to include the following key words in your reflection Elements Compounds
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SStarter: Fill in the missing spaces below.1. Al Al Bromine Bromine2. 3. Ca Ca 4. C Gold Gold5. Helium Helium6. 7. H 8. N
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Agenda: Starter Compound Notes Exit
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PP ractice- copy the following vocabulary words in your journal. A compound-is made from two or more elements that are chemically combined and can not be separated by physical means into other substances. A compound has different properties than the original elements that formed it. A chemical formula -is a combination of chemical symbols showing the atoms of which a substance is made and their proportions. A physical change -when substances undergo a change without changing into another substance. A chemical change - when substances undergo a change and become a new or different substance.
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PP ractice- copy the following vocabulary words in your journal. A subscript is a number written just below the line that shows how many atoms of an element are present in the formula. A molecule is the smallest particle of a compound that can exist on its own and keep its properties. A precipitate is a new substance produced as a result of a chemical change (solid).
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PP ractice- copy the following words in your journal. Compounds are formed when atoms of different elements are combined. When the elements are combined their identities change. Water is formed from hydrogen and oxygen. Both elements are gases. When combined they turn to a liquid. Hence their identities change.
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PP ractice- copy the following words in your journal. Analogy: Think of elements as letters of the alphabet and compounds as words formed by combining the letters. We can spell all of the English words with just 26 letters. We can form millions of compounds with just 109 elements. Ex: Sodium(Na) + Chlorine(CI) = Salt(NaCI)
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PP ractice- copy the following notes in your journal. What type of change occurs when forming compounds? Chemical changes Do the characteristics of an element change when combined with another? Yes, the change occurs on a molecular level. What happens when 2 or more elements combine and their properties change? A compound is formed
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PP ractice- copy the T-chart in your notebook. Elements Compounds Both
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PP ractice- Write each of the following statements where they belong. A.Found in Earth’s atmosphere. B.Needed for humans to survive. C.Made from more than one element. D.Made of one pure substance. E.Can be broken down into simpler substances. F.Are pure substances. G.Make up substances we use everyday. H.Can be written using subscripts. I.Can be found on the Periodic Table.
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A pply & C onnect 1. Give 2 examples of how to write a subscript correctly. 2. Explain why it is important for you to understand what compounds are. E xit Write a half page reflection on what you learned today. Be sure to include the following key words in your reflection Elements Compounds
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Create a bar graph with the following information: Cupcakes Mass per cupcake(grams) Chocolate20 Vanilla45 Strawberry60 White Chocolate90 SStarter:
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Agenda: Starter Physical vs. Chemical Changes Quiz Exit
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PP ractice- Number your paper 1-10. You will watch as the teacher performs difference changes and take notes on what is occurring. You must make two observations for each change. You will then decide if each is a physical or chemical change.
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Teacher Slide 1.Sugar dissolving in water. 2.Baking Soda into vinegar. 3.Cutting a piece of paper up. 4.Ice melting. 5.Food Coloring into water. 6.Oxygen into Carbon Dioxide. (Balloon) 7.Glowstick Breaking. 8.Lighting a candle. (Tealights) 9.Crushing a plastic bottle. 10.Oxidized Penny
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A pply & C onnect 1. Give an example of an experiment you could conduct to demonstrate a physical reaction. 2. Describe an example of a chemical reaction that occurs in your life frequently. E xit Write a half page reflection on what you learned today. Be sure to include the following key words in your reflection Compounds Subscript
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Title for Thursday, 11-3-2011 Water Or Not Lab How many TOTAL atoms are found in the following chemical formulas? SStarter: Write the question. Compare the formulas below. What makes them different? 1.NH3 2.H2SO4 3.H2O H2O2 4.C6H12O6 C12H22O11
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Agenda: Starter Water Or Not Lab Exit
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PP ractice Students will draw the lab setup in journal and write observations and predictions about what the lab could be demonstrating. REMEMBER: Even though some liquids look similar, they can have very different properties. Please be careful with both substances, do not taste or touch either substance over the next two days.
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PP ractice I will explain what we are going to do in this upcoming lab. It is your job to work with your group and create the problem, hypothesis, materials list, procedure, observations/data, results and conclusion for this lab. (Today you will stop at procedure.) Be specific in your instructions. (Pretend someone has never done a lab before.) Be sure to include safety procedures. Use complete sentences and thoughts. Start at the very beginning and work to the end.
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PP ractice *HINT* PLEASE WRITE IN JOURNAL. Hydrogen peroxide is used as an antiseptic to wash cuts. One characteristic of hydrogen peroxide is that it will produce bubbles when applied to a wound. Water will not. The formation of bubbles is one sign that a chemical reaction has taken place.
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A pply & C onnect 1. What is the difference between water and hydrogen peroxide on an atomic level? 2. Why would we do a lab with two substances that look exactly the same? What does this teach us? E xit Write a half page reflection on what you learned today. Be sure to include the following key words in your reflection Elements Compounds Water Hydrogen Peroxide
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Title for Friday, 11-4-2011 Water Or Not Lab 1. Draw a picture of an element used in school everyday. 2. Draw a picture of a compound used in the cafeteria. SStarter:
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Agenda: Starter Finish Water Or Not Lab Exit
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PP ractice Students will refer to lab write up from Thursday. We will finish with putting the potato slices into the clear substances today and completing our lab write up. We will need to complete observation/data, results and conclusion.
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A pply & C onnect E xit Write a half page reflection on what you learned today. Be sure to include the following key words in your reflection Elements Compounds Mixture Periodic Table 1. Why do we need to be specific with lab procedures? 2. What reaction led us to believe a chemical reaction was occurring today? 3. Explain a situation in which hydrogen peroxide could be helpful to your family.
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Materials Test tubes/rack Table salt Chalk Sand Honey Balloon Hydrogen Peroxide Potatoes Paper Towels Beakers
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