Identifying Lab Equipment and Function Compound Light Microscope

Identifying Lab Equipment and Function

Compound Light Microscope Magnifies very small objects (dead or alive)

Graduated Cylinder Used to measure Volume (accurate)

State Test Question • Which of the following tools would a biologist MOST likely use to help magnify specimens? • Hand lens and ruler • Microscope and hand lens • Camera and computer • Telescope and compass • Which of these will give the MOST accurate and precise measurement of 15 m. L of liquid to be placed in a test tube? • A 100 m. L graduated cylinder • A 25 m. L graduated cylinder • A 10 m. L beaker • A 50 m. L beaker

Glass Slide Supports an item being examined under the microscope

Coverslip Covers materials on a microscope slideplaced on the slide at a 45º angle

Beaker Holds liquids while they are being heated or stirred-doesn’t measure volume accurately

State Test Question • Which of the following shows the BEST way to transport a beaker of diluted hydrochloric acid?

Test Tube Brush Used to clean test tubes

Evaporating Dish Used for heating solids

Striker Used to ignite a burner

Funnel Helps in transferring liquids to containers with smaller openings

Triple-Beam Balance Measures Mass

State Test Question Which of the following can NOT be used to measure volume? • A. Balances • B. Beakers • C. Pipettes • D. Graduated cylinders

Test Tube Holds liquids for observation or testing

State Test Question When heating a test tube, it is important to--a. move it slightly so that the contents are heated evenly. b. tilt it slightly toward you so that you know when the contents are boiling. c. stopper the tube so the contents will not spill. d. tilt the tube away from you in case the contents splatter.

Safety Goggles Protects Eyes

State Test Question Eye protection should be used in the laboratory when--A. reviewing the contents of the scientific supply area. B. operating a compound microscope. C. testing any hypothesis. D. chemical fumes might be present.

Crucible Tongs Used for picking up crucible and crucible covers and beaker

Mortar and Pestle Used to grind solids into powders

Florence Flask Used to store liquids

Erlenmeyer Flask Used to store solutions

State Test Question • Which of the following shows the correct laboratory procedure for mixing an acid with water in a flask?

Probe Pointed object used to examine specimens

Dissecting Pins Holds specimens on dissecting trays

Forceps Used to hold or lift specimen

Medicine Dropper Measures out drops of liquid

Petri Dish Shallow dish used to culture bacteria

Hand Lens Magnifies small objects

Crucible Container used for strong heating

Test Tube Rack Holds test tubes during observation or testing

Scalpel Small sharp knife used to dissect

Pipette Used for exact measurement of liquids

Stopper Used to cap flasks containing liquids

Thermometer Used to measure temperature

Dissecting Tray Holds specimen for dissecting

Test Tube Clamp Holds test tubes while heating

State Test Question • Which of these pictures shows the correct way to pick up a heated test tube

Electronic Balance Used for weighing substances

Bunsen Burner Heats things up

Metric Ruler Used to measure metric length

Dissecting Scissors Cuts specimen to be studied

Inoculating Loop

Stirring Rod

State Test Question • A scientist needs to determine the density of a solid cube. Which of the following tools can be used for the task? • a. Triple-beam balance and calculator • b. Ruler and beaker • c. Calculator and ruler • d. Triple-beam balance and graduated cylinder

Analysis and Conclusion Which laboratory tools can be used to magnify small objects so they can be seen more easily? Hand lens, Microscope Which laboratory tool/tools is/are useful when looking at the internal organs of an earthworm? microscope, scalpel, dissecting tray, probe, dissecting pins, safety goggles

Critical Thinking and Application What tool or tools would be used to make each of the following measurements? a. Amount of milk in a small glass? graduated cylinder b. Length of a sheet of paper? metric ruler c. Temperature of a swimming pool? thermometer d. Mass of a baseball? triple-beam balance e. Mass of a rock? triple-beam balance