Lab Equipment Measurement Tools for Science Triple Beam

Lab Equipment & Measurement Tools for Science

Triple Beam Balance • Measures mass (amount of matter in an object) • Unit: grams (g)

Triple Beam Balance • How to Use: • Place object on metal pan • Move all slides to zero • Slowly move slides until arrow is even with line *Start with the largest • Add all measurements together to get the total mass in grams ▫ Ex: 200 g + 70 g +6. 5 g = 276. 5 grams

Electronic Balance • Also measures mass; Unit: grams

Electronic Balance • How to Use: • Turn on • Wait until the balance reads O grams • Place object on balance & record mass ▫ Ex: 2. 7 grams

Meter Stick • Measures length, width, or height • Unit: meters (m)

Metric Ruler • Measures length, width, or height of an object • Unit: centimeters (cm)

Metric Ruler • How to Use: • Find the side that reads in centimeters (cm) • Line object up at the O cm mark • Each numbered line = 1 cm • Each small line in between = 1 mm • Record length to nearest mm

Metric Ruler ▫ Example: 1 cm + 5 mm = 1. 5 cm

Volume of a Cube • Rulers can also measure volume of a cube • Unit: centimeters cubed (cm 3) • Volume = Length x Width x Height ▫ Example: 5 cm x 5 cm = 125 cm 3

Graduated Cylinder • Measures liquid volume • Unit: milliliters (m. L) • Volume: the amount of space something takes up

Graduated Cylinder • How to Use • Pour liquid into cylinder • Find the meniscus • Record volume in m. L • Be sure to check the scale! ▫ Ex: 6. 8 m. L

Water Displacement • Measures the volume of irregularly shaped objects in cm 3 • Example: ▫ starting volume = 20 m. L ▫ end volume = 23 m. L • Subtract end volume from start volume of water to find volume of object: ▫ 23 m. L water – 20 m. L water = 3 cm 3 rock

Density • The formula for density is = Mass/Volume (g/m. L) • D = m/v

Hold up…. • There’s math in science class? • Cool Science Jobs: Music Producer

Recap • Brain Pop Review Video

Beaker • Used to mix or pour liquids • Unit: milliliters (m. L)

Thermometer • Measures Temperature • Unit: degrees Celsius (˚C) ▫ O ˚C = freezing ▫ 25 ˚C = room temperature ▫ 100 ˚C = boiling

Probeware • Can be used to digitally collect data & graph results

Test Tubes Test Tube Rack • Clear glass tubes used to mix or observe chemicals • Used to hold test tubes

Tongs Beaker Tongs Test Tube Tongs • Used to hold hot beakers • Used to hold hot test tubes

Funnel • Used to transfer liquids without spilling

Flask Florence Flask Erlenmyer Flask • Used to mix liquids by swirling • Rounded • Used to mix liquids by swirling • Triangular shape

Pipette • Plastic dropper used to transfer or add small amounts of a liquid

Reagent Bottle • Used to hold and dispense liquids

Petri Dish • Plastic dish used to observe specimens or grow cultures

Microscope • Used to magnify specimens

Microscope Slides Slide Cover Slips • Glass rectangle used to hold specimen under microscope • Clear plastic square placed over specimen to protect microscope lens

Dissecting Tools Scalpel Scissors • Used to cut like a razor • Also used to cut during dissections

Dissection Tools Forceps Dissecting Probe • Tweezers used to pull apart specimen • Used to move parts of specimen

Dissection Tools Dissecting Tray Dissecting Pins • Rubber lined metal tray used to hold specimen. • Sharp needles used to hold specimen to tray