1. 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

2. 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

3. 8. MASS- the quantity of matter as determined from its weight or from Newton’s 2 nd 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

4. Competency 1.a

5.  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

6.  Used for exact (precise) volume measurements of liquids  Several different kinds Plastic Volumetric (Glass)

7.  Used to measure masses very precisely.  Each beam measures a different mass unit

8.  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.

9.  Used to measure temperature  Celsius (C = (F-32) x 5/9)  Kelvin (K = C + 273)  Fahrenheit (F = C x 9/5 + 32)

10.  Used to measure length or distance

11.  Used to contain volumes of liquids.  Measurements are not as precise as graduated cylinders or pipettes  Marks on the side indicate units of volume

12.  Clear glass tube used to hold small volumes of substances  Not very precise

13.  Used to hold test tubes upright.

14.  Used for crushing and grinding substances

15.  Most common flask  Used to contain volumes reaction solutions  Not very precise, but there are units of volume marked

16.  More precise than the Erhlenmeyer flask.  Has precise graduation volume markers on the neck of the flask

17.  Used to contain volumes of liquid substances  Not very precise  Rounded bottom makes it easy to tip over

18.  Used to protect the eyes during experiments  Vents help keep goggles from getting foggy

19.  Used to protect clothing during an experiment

20.  Used to hold hot or potentially hazardous equipment

21.  Used to cover beakers, especially if the substance inside is potentially hazardous

22.  Glass rod used to stir liquids

23.  Produces a single gas flame, used for heating and sterilization  STRIKER- piece of flint equipment used to “strike” a Bunsen burner