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Warm Up Your homework should be on your desk. Work silently. Write a quality procedure and list materials to make a peanut butter and jelly sandwich. Should have at least 3 materials and at least 5 steps.
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Take 1
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2. Ask a question Scientific Method 1. Make an observation 3. Gather Background Information 4. Make a Hypothesis 5. Test the Hypothesis (Experiment) 6. Analyze Data 7. Draw Conclusions 8. Reflect
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Continue describing and writing ‘quality’ hypotheses about demos… It’s Demo Time! Chicken Liver… I noticed that when you put chicken liver into hydrogen peroxide… Observation? So I asked “what will be the effect of adding heat to the mixture?”
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Procedure 1.Measure 75 mL of hydrogen peroxide using a graduated cylinder. 2. Pour the hydrogen peroxide into the Erlenmeyer flask. 3. Use the tongs to place a piece of chicken liver in the hydrogen peroxide. 4. Light a wooden stick and then blow it out. 5. Place the wooden stick into the Erlenmeyer flask. 6. Clean up!
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Hypothesis Take a min to write your own Remember, a quality hypothesis does not have to be right!
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Finish 7 + 8 May discuss with group
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Section: Notes Name: _____________________ Date: ______________________ Period: _____________________ Words Ms. H’s definitions My definitions Time for vocab! divide your paper into three sections 1.Experiment 2.Materials 3.Procedure
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“My definitions” section Write the definition in your own words Draw a picture Write an example Write a sample problem Use it in a sentence Give synonyms and antonyms Any other way you can think of to REMEMBER the word
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Chemistry The study of matter and its changes
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Scientific method A set of steps used to ask questions and get answers about the real world
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Objective Something a person wants to accomplish
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Hypothesis An educated guess to your question
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Observation A fact gathered and collected using your five senses and tools
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Inference an interpretation of your observations
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Testable Doable Measureable Recognizable Understandable
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Experiment: a test you do to answer a question
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Materials: the things you need to test your hypothesis.
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Procedure: the instructions you need to follow to test your hypothesis.
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Criteria What we use to evaluate the quality of something
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Volume How much space something takes up
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Graduated cylinder Measures volume precisely Measures in milliliters (mL) Read from the bottom of the meniscus
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Beaker Less precise than a graduated cylinder Holds liquid Measures in mL
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Erlenmeyer flask Small opening Good for mixing chemicals Measures in mL Less precise than a graduated cylinder
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Add at least one other vocab word we used this week that you think was important We will continue to add to our unit 1 vocab next week You can put vocab at the back of your binder
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Homework Complete vocab sheet if not finished Short mini vocab quiz on Monday Enjoy your weekend Congratulations on your first week as chemists
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Daily Quiz Work silently We will check it when time is called
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Daily Quiz Answers Give a point for each answer that is in a complete sentence. Top Ten: how’d we do? Prizes!!!
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