warm up your homework should be on your desk. work silently. write a quality procedure and list...
TRANSCRIPT
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Warm UpYour 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 methodA 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!!!