catalyst 1.in your notebook, create a table of contents on the first page. make 2 columns. label one...
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Catalyst
1. In your notebook, create a table of contents on the first page. Make 2 columns. Label one column “Topic” and the other column “Page numbers”
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What does it look like to get acid in your eye?
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Lecture 0.1 – Lab Rules
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What are the rules for chemistry labs?
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I. General Safety Rules
1. Listen to or read instructions carefully.
2. Always wear safety goggles 3. Notify your of any spills or
accidents.
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I. General Safety Rules
4. After handling chemicals, wash your hands.
5. During lab work, keep your hands away from your face.
6. Tie back long hair.
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I. General Safety Rules
7. Roll up sleeves.8. Know the location of the fire
extinguisher
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I. General Safety Rules
9. Never put anything into your mouth.10. Clean up your lab area.11. Never “horse around” in the
laboratory.
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II. Glassware Safety
1. Chipped or cracked glassware should not be used.
2. When pouring liquids into glassware, make sure the container you are pouring into is resting on a table.
3. If a piece of glassware gets broken, do not try to clean it up.
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II. Glassware Safety4. Do not place hot glassware in water.
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III. Chemical Safety
1. Wear protective goggles always.2. Never mix chemicals together unless
you are told to do so.
3. Never taste any chemicals.
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III. Chemical Safety
4. If you need to smell the odor of a chemical, waft the fumes.
5. Follow the instructions when disposing of all chemicals.
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Lab Safety Contract
• Take out the lab safety contract
• By signing this, you understand that these are the rules for our lab and violating them can lead to loss of lab privileges.
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5 Minute Break
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Magically Separating Mixture
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Justify – TPS
• Why did the mixtures separate?
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What is density?
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I. Density
• Density is the mass per unit of volume
• Very large mass in a very small space, then we say that it is very dense.
• Very small mass in a very large space, then we say that it is not very dense.
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Is this very dense or not very dense?
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Is this very dense or not very dense?
.
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Density of Pennies and Nickels
• Pennies since 1982 have been made of a copper outside and a different metal center.
• US Nickels are made of a metal mixture of 75% copper and 25% nickel
• In this lab, you will be testing to see if these coins match the accepted density.
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Calculating Volume by Displacement• Many objects have odd shapes and don’t have
an easy way to calculate its volume.• Volume by displacement is an easy way to
calculate volume.
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What is a hypothesis?
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I. Formulating a Hypothesis• A hypothesis is an educated guess.• Given as a “If _______, then
______” statement.• E.g. If I put salt in water, then it will
dissolve.• NOTE – A hypothesis must be
testable
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WRITE A HYPOTHESIS FOR THIS LAB
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Density Lab
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Closing Time• Turn in the lab handout before you leave. This
is worth points!