Grade 7 Science: Proper Use and Handling of Laboratory Equipment and Safety

GRADE 7 SCIENCE
Proper Use &
Handling of
Science Equipment
Competency: Demonstrate proper use
and handling of science equipment
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1

Grade 7 Science Learning Targets & Safety First
After this lesson, learners
can:
✓
Name common science apparatuses.
✓
Choose the correct tool for a task.
✓
Show safe handling and proper storage.
✓ Explain what to do before, during, and after lab work.
Golden Rule: Ask before you touch or
use equipment.
2

Grade 7 Science Measuring Liquids: Cylinder & Pipette
Graduated Cylinder
Use to measure liquid volume. Place
on a flat table and read the bottom of
the meniscus at eye level.
Pipette / Dropper
Use to transfer small amounts of
liquid. Squeeze gently; never point the
tip at anyone.
Use it when: accurate liquid
measurement is needed.
3

Grade 7 Science Heating Tools: Burner & Test Tube Holder
How to use safely
✓
Wear goggles and tie back loose hair.
✓
Point test tube away from people.
✓
Use a holder; never hold hot glass by hand.
✓
Heat gently and move the tube in the flame.
Stop if glass cracks or liquid boils
too fast.
4

Grade 7 Science Observing Small Things: Microscope
Proper handling steps
✓
Carry with two hands: arm and base.
✓
Start with the lowest power objective.
✓
Use coarse focus first, then fine focus.
✓
Clean lenses with lens paper only.
5

Grade 7 Science Measuring Mass & Temperature
Digital Balance
Use to measure mass. Press
zero/tare first, use a container, and
keep the pan clean and dry.
Thermometer
Use to measure temperature. Hold
carefully, keep the bulb in the
liquid, and wait for the reading to
become steady.
6

Grade 7 Science Common Glassware & Mixing Tools
Beaker
hold, mix, or heat liquids
Erlenmeyer flask
swirl liquids with less spilling
Funnel
pour into narrow openings
Stirring rod
mix safely and guide pouring
Test tube rack
hold test tubes upright
7

Grade 7 Science Practice: Choose the Right Apparatus
Quick Check
1 You need exactly 50 mL of water.
2 You need to observe onion cells.
3 You need to heat a small amount of liquid.
4 You need to find the mass of salt.
Exit Ticket: Draw one apparatus and write
its proper use.
8

Grade 7 Science Clean Up & Store Equipment Correctly
Finish every lab the right
way
✓
Turn off heat, gas, and electricity.
✓
Wash and dry glassware carefully.
✓
Return apparatus to correct places.
✓
Report broken glass or spills immediately.
✓
Wash hands before leaving the lab.
9

• Solutions, Solubility, and Concentration
• Roles of the solute and solvent in a solution.
• Express quantitatively the amount of solute present in a
given volume of solvent.
• Computation/GRESA method of % by mass and volume and
amount of solute.
• Factors affect the solubility of a solute in a given solvent,
such as heat, size of particles, and stirring.
• Identify solutions, which can be found at home and in
school and that react with a litmus indicator as acids, bases,
and salts.
• Proper use and handling of science equipment.
• MAKE 50 QUESTIONS WITH ANSWERS ABOUT THE TOPICS
ABOVE.
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Grade 7 Science: Proper Use and Handling of Laboratory Equipment and Safety