1. BIOLOGY- the study of life or living matter in all its forms and phenomena (bio = life; ology =...
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Transcript of 1. BIOLOGY- the study of life or living matter in all its forms and phenomena (bio = life; ology =...
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Week 1 Vocab:
1. BIOLOGY- the study of life or living matter in all its forms and phenomena (bio = life; ology = the study of)
2. BIOHAZARD- a health risk posed by a pathogen used or produced in biological research
3. PRECISION- mechanical or scientific exactness
4. ACCURACY- freedom from error or defect
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Week 1 Vocab:
5. MENISCUS- the convex or concave (curved) upper surface of a column of liquid
6. CORROSIVE- having the quality of acidity or eating away
7. GRADUATED CYLINDER- a narrow, cylindrical container marked with horizontal lines to represent units of measurement and used to precisely measure the volume of liquids
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Week 1 Vocab:
8. MASS- the quantity of matter as determined from its weight or from Newton’s 2nd Law (F=ma)
9. VOLUME- the amount of space, measured in cubic units, that an object or substance occupies
10.FLAMMABLE- easily set on fire; combustible
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Lab EquipmentCompetency 1.a
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Graduated Cylinder
Used to make accurate measurements of liquid volumes.
MENISUS (see vocab) Bumpers- used to protect if tipped over, keep them near the top of the cylinder
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Pipette
Used for exact (precise) volume measurements of liquids
Several different kinds
Plastic
Volumetric (Glass)
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Balance (Triple Beam)
Used to measure masses very precisely.
Each beam measures a different mass unit
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Bio BW (8/14)
Pick up a sheet from the counter. Choose a partner NEAR you (DON’T
CHANGE SEATS) and answer the questions on the back.
You may work alone if you want. Write your answers below the
questions. Hang onto it when you’re finish.
Don’t turn it in.
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Thermometer
Used to measure temperature Celsius (C = (F-32) x 5/9) Kelvin (K = C + 273) Fahrenheit (F = C x 9/5 + 32)
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Ruler
Used to measure length or distance
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Beakers
Used to contain volumes of liquids. Measurements are not as precise as
graduated cylinders or pipettes Marks on the side indicate units of volume
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Test Tubes
Clear glass tube used to hold small volumes of substances
Not very precise
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Test Tube Rack
Used to hold test tubes upright.
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Mortor & Pestle
Used for crushing and grinding substances
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Erlenmeyer Flask
Most common flask Used to contain volumes
reaction solutions Not very precise, but
there are units of volume marked
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Volumetric Flask
More precise than the Erhlenmeyer flask.
Has precise graduation volume markers on the neck of the flask
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Florance Flask
Used to contain volumes of liquid substances
Not very precise Rounded bottom makes it
easy to tip over
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Safety Goggles
Used to protect the eyes during experiments
Vents help keep goggles from getting foggy
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Apron/Lab Coat
Used to protect clothing during an experiment
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Tongs/Test Tube Holders
Used to hold hot or potentially hazardous equipment
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Watch Glass
Used to cover beakers, especially if the substance inside is potentially hazardous
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Stirring Rod
Glass rod used to stir liquids
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Bunsen Burner
Produces a single gas flame, used for heating and sterilization
STRIKER- piece of flint equipment used to “strike” a Bunsen burner