Experimental Variables Worksheet Answers 11 Safety In the Science ... - Free Printable

Let's solve this Lab Safety worksheet step by step. The goal is to fill in each blank with the correct word or phrase from the provided box, using each only once.

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Word Box:

- organized
- flame
- glassware
- wash
- cords
- long hair
- clean up
- directions
- well-lit
- taste
- ask questions
- teacher
- eat or drink
- shoes
- live plants or animals
- sharp
- spill
- safety goggles
- broken glass
- closed
- plastic gloves
- unapproved
- safety equipment
- heat-resistant gloves
- apron
- lab materials

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Now let’s go through each sentence and determine the best fit:

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1. Always ________ your hands before and after an experiment.
→ wash
✔ *Hygiene is essential in labs.*

2. Read all ________ before beginning the experiment and ask questions if you are unsure of directions.
→ directions
✔ *Always follow instructions carefully.*

3. Keep your work area neat and ________.
→ organized
✔ *An organized workspace reduces accidents.*

4. Know the location of ________ and how to use it.
→ safety equipment
✔ *Examples: fire extinguisher, eyewash station, etc.*

5. Always wear ________ when working with chemicals, burners, or any substance that may hurt your eyes.
→ safety goggles
✔ *Eye protection is crucial.*

6. Never touch, ________, or smell any chemical.
→ taste
✔ *Never ingest chemicals.*

7. Be careful not to ________ any materials. If a spill does occur, clean it up immediately.
→ spill
✔ *Spills can be dangerous.*

8. Never reach across a ________.
→ flame
✔ *Reaching over a flame can cause burns.*

9. Pull back ________ and push up sleeves.
→ long hair
✔ *Prevents hair from catching fire or getting caught.*

10. Have an adult handle ________ objects such as knives or blades.
→ sharp
✔ *Sharp objects require caution.*

11. Always work in a ________ and well-ventilated area.
→ well-lit
✔ *Good lighting prevents mistakes.*

12. Never heat liquids in a ________ container.
→ closed
✔ *Closed containers can explode when heated.*

13. Always use the tongs, clamps, or ________ when moving hot containers.
→ heat-resistant gloves
✔ *Protects hands from burns.*

14. Never use broken or chipped ________.
→ glassware
✔ *Broken glass can cut you or break easily.*

15. Dispose of ________ or other sharp objects in the proper container.
→ broken glass
✔ *Safety disposal is important.*

16. Notify the ________ immediately if you are cut, burned, or otherwise hurt.
→ teacher
✔ *Teachers are responsible for safety.*

17. ________ your work area when the experiment is completed.
→ clean up
✔ *Leaving a mess is unsafe.*

18. Return all ________ to their proper location when the experiment is completed.
→ lab materials
✔ *Keeps things organized.*

19. Never perform unsupervised or ________ experiments.
→ unapproved
✔ *Only do approved experiments.*

20. Wear an ________ to protect yourself and your clothes from chemicals.
→ apron
✔ *Aprons prevent chemical spills on clothing.*

21. Wear closed-toe ________ when performing experiments.
→ shoes
✔ *Protects feet from spills or falling objects.*

22. Make sure appliances are working properly and keep ________ untangled and out of walking paths.
→ cords
✔ *Prevents tripping hazards.*

23. Handle ________ with care and never be cruel or harm living creatures in an experiment.
→ live plants or animals
✔ *Ethical treatment of living things.*

24. Make sure you know how to use all of the equipment and ________ if you don’t.
→ ask questions
✔ *Seek help when unsure.*

25. Wear ________ to protect your hands when handling live animals, plants, or chemicals.
→ plastic gloves
✔ *Gloves protect skin from contamination.*

26. Do not ________ while completing an experiment.
→ eat or drink
✔ *Avoiding ingestion of chemicals.*

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✔ Final Answers (with blanks filled):

1. Always wash your hands before and after an experiment.
2. Read all directions before beginning the experiment and ask questions if you are unsure of directions.
3. Keep your work area neat and organized.
4. Know the location of safety equipment and how to use it.
5. Always wear safety goggles when working with chemicals, burners, or any substance that may hurt your eyes.
6. Never touch, taste, or smell any chemical.
7. Be careful not to spill any materials. If a spill does occur, clean it up immediately.
8. Never reach across a flame.
9. Pull back long hair and push up sleeves.
10. Have an adult handle sharp objects such as knives or blades.
11. Always work in a well-lit and well-ventilated area.
12. Never heat liquids in a closed container.
13. Always use the tongs, clamps, or heat-resistant gloves when moving hot containers.
14. Never use broken or chipped glassware.
15. Dispose of broken glass or other sharp objects in the proper container.
16. Notify the teacher immediately if you are cut, burned, or otherwise hurt.
17. Clean up your work area when the experiment is completed.
18. Return all lab materials to their proper location when the experiment is completed.
19. Never perform unsupervised or unapproved experiments.
20. Wear an apron to protect yourself and your clothes from chemicals.
21. Wear closed-toe shoes when performing experiments.
22. Make sure appliances are working properly and keep cords untangled and out of walking paths.
23. Handle live plants or animals with care and never be cruel or harm living creatures in an experiment.
24. Make sure you know how to use all of the equipment and ask questions if you don’t.
25. Wear plastic gloves to protect your hands when handling live animals, plants, or chemicals.
26. Do not eat or drink while completing an experiment.

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🔍 Explanation:

This worksheet teaches basic laboratory safety practices using common vocabulary. Each answer emphasizes:
- Personal protection (goggles, gloves, apron)
- Proper behavior (no eating, no tasting)
- Equipment handling (glassware, flames, sharp tools)
- Emergency preparedness (knowing where safety equipment is)
- Cleanliness and organization

These principles are foundational in science education and help prevent accidents.

✔ All 26 answers are correctly filled using the word bank, and each word used only once.

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