WHAT SHOULD YOU DO WITH THE PRODUCTS OF AN EXPERIMENT? DISPOSE OF IT AND NEVER PUT IT BACK IN ORIGINAL CONTAINER BECAUSE YOU CAN HAVE CROSS CONTAMINATION.
What do you do with chemicals after an experiment?
Most chemical wastes must be disposed of through the EHS Hazardous Waste Program. To have hazardous waste removed from your laboratory, do the following: Store chemical wastes in appropriate containers, plastic bottles are preferred over glass for storing hazardous waste when compatibility is not an issue.
What should you do at the end of every lab experiment?
hands with soap and water after performing all experiments. Clean (with detergent), rinse, and wipe dry all work surfaces (including the sink) and apparatus at the end of the experiment.
What should you do with chemicals leftover after an experiment quizlet?
What should you do with the leftover chemicals after and experiment? What should you do with the products of an experiment? Dispose of the chemicals in proper wast containers and wash the materials.
What should you do with extra unused portions of chemicals?
If you decide to simply dispose of your unused chemicals, make sure you do it right . Call the industrial waste disposal professionals and have them take care of your inventory. They will ensure that the chemicals are disposed of in the safest and most environmentally friendly way possible.
When gathering glassware and equipment for an experiment you should?
When gathering glassware and equipment for an experiment, you should… Read all directions carefully to know what equipment is necessary. Examine all glassware to check for chips or cracks. Clean any glassware that looks dirty.
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What are the rules that should follow while doing experiments in a science lab?
General Laboratory Safety Rules
- Know locations of laboratory safety showers, eyewashstations, and fire extinguishers. …
- Know emergency exit routes.
- Avoid skin and eye contact with all chemicals.
- Minimize all chemical exposures.
- No horseplay will be tolerated.
- Assume that all chemicals of unknown toxicity are highly toxic.
What is the last thing you should do when ending an experimental activity?
The last thing you should do before leaving the lab, after an experiment, is to wash your hands. Most chemicals are toxic to some extent, so clean your hands before leaving. Take appropriate action, then notify the instructor. You do not need permission to use safety equipment.
How should spill cleaning materials be discarded?
How should spill cleaning materials be discarded? … Rinse the cleaning materials in the sink, then place them in the trash can. Seal in a labeled plastic bag, then place in the solid waste container. Seal in a labeled plastic bag, then place in the solid waste container.
How should students prepare to use chemicals in the lab quizlet?
How should students prepare to use chemicals in the lab? Locate the spill kits and understand how they are used. Become familiar with the chemicals to be used, including exposure or spill hazards. What is the extra step in cleaning up acid and base spills?
What should you do before handling chemicals quizlet?
What should you do before handling chemicals? Should you use your hands to touch chemicals? Always wear gloves and proper equipment to handle chemicals to prevent and burns or other damage.
When you are done using the glassware from a kit What should you do quizlet?
You need to dispose them in the proper waste container and clean up the area. Make sure to never put them in the regular trash can. Where should you put the leftover materials you used that didn’t touch the chemicals?
How do you dispose of chemicals in a high school lab?
Chemicals that can go into the trash
Certain chemicals can be thrown away in the trash or dumpster at school. It is recommended that only small amounts be disposed of at any one time (no more than 5 or 10 lbs.), and only in tightly sealed containers.
When working in the laboratory you should perform?
When working in the laboratory you should perform only those activities assigned by your teacher. Carefully follow all (31) , both written and oral. Wear safety goggles and a lab (32) at all times. Avoid apparel that presents safety hazards, such as (33) garments and (34) jewelry.
Should I return all unused chemicals to their original containers?
All chemicals in the lab are yo be considered dangerous. Return all unused chemicals to their original containers. Pipets are used to measure and dispense small amounts of liquids. … Laboratory work can be started immediately upon entering the laboratory even if the instructor is not yet present.
What should a student do if equipment is not working properly in the laboratory?
What should a student do if equipment is not working properly in the laboratory? Tell the science teacher. not permitted.
Do and don’ts in laboratory?
Do and Don’t in the Science Lab
- Do Wear Eye Protection. …
- Do Practice Fire Safety. …
- Do Handle Glassware Safely. …
- Do Keep Notes. …
- Do Wear Gloves. …
- Do Wear Closed-Toed Shoes. …
- Do Practice Electrical Safety. …
- Don’t Eat or Drink in the Lab.
How important is safety in doing laboratory activities?
By becoming familiar with the laboratory you’re working in and always following proper safety procedures, you can help to prevent or eliminate hazards. … You will also know the proper steps to take in the unfortunate event that something does go wrong.
What are the top 10 lab safety rules?
The 10 Most Important Lab Safety Rules
- of 10. The Most Important Lab Safety Rule. …
- of 10. Know the Location of Safety Equipment. …
- of 10. Dress for the Lab. …
- of 10. Don’t Eat or Drink in the Laboratory. …
- of 10. Don’t Taste or Sniff Chemicals. …
- of 10. Don’t Play Mad Scientist in the Laboratory. …
- of 10. Dispose of Lab Waste Properly. …
- of 10.
What is your conclusion of this experiment?
Your conclusions summarize how your results support or contradict your original hypothesis: Summarize your science fair project results in a few sentences and use this summary to support your conclusion. Include key facts from your background research to help explain your results as needed.
What makes a good experimental procedure?
Write the experimental procedure like a step-by-step recipe for your science experiment. A good procedure is so detailed and complete that it lets someone else duplicate your experiment exactly! Repeating a science experiment is an important step to verify that your results are consistent and not just an accident.
What do the conclusions tell about the experiment?
A conclusion paragraph contains a description of the purpose of the experiment, a discussion of your major findings, an explanation of your findings, and recommendations for further study.
How should students prepare to use chemicals in the lab select one or more?
How should students prepare to use chemicals in the lab? Select one or more: Become familiar with the chemicals to be used, including exposure or spill hazards. Locate the spill kits and understand how they are used.
What do you do this a thermometer once you are finished using it?
What do you do if a thermometer breaks? clean-up kit. They kit and glass should also be disposed in the proper way.
What should you do every time before you leave the lab quizlet?
What should you do every time before you leave the lab? Remove your labcoat. Remove your gloves. Wash your hands.
How do you clean glassware in a lab?
General Procedure For All Glassware
Use warm tap water and a brush with soapy water to scrub the inside of curved glassware. This waste water can go down the sink. Remove soapsuds with deionized water to avoid harsh water stains. The DI water rinse should form a smooth sheet when poured through clean glassware.
What chemicals can be cleaned up with a general spill kit?
Spill Kits and Spill Clean Up Procedures
| Chemical Spilled | Clean-Up Procedures |
|---|---|
| Inorganic Salt Solutions | Apply soda ash |
| Mercaptans/Organic Sulfides | Neutralize with calcium hypochlorite solution. Absorb with spill pillow or vermiculite. |
| Nitriles | Sweep up solids. Absorb liquids with spill pillows or vermiculite. |
What are the best practices while sharing a lab balance with other students quizlet?
What are the best practices while sharing a lab balance with other students? Alert your TA or instructor about any issues with the balance. Brush off any chemical dust around the balance after each use. An instrument for determining the density of a liquid relative to that of water.
What should you do before you come to lab?
Before leaving the lab, you’ll need to make sure it’s thoroughly cleaned so it’s ready and safe to work in again. Make sure to clean all used glassware, return reagents to the storage area, dispose waste in the right containers and clean your workbench.
What steps should you take when pouring liquids from a reagent bottle?
Carefully pour the amount of reagent that you will need, not extra, into the beaker and then close the reagent bottle. Graduated cylinders are unstable so transfer liquids into the labeled beaker first and then pour from the beaker into your graduated cylinder.
What steps should you take when pouring liquids from a reagent bottle quizlet?
1. Never lay the stopper of a reagent bottle on the lab table. 2. Never pour reagents back into stock bottles.
…
- Make sure the glassware is Pyrex or a similar heat-resistant type.
- Use a ceramic-centered wire gauze to protect glassware from direct contact with the flame.
- Use heat safety items when handling this apparatus.
What should you do with leftover chemicals after an experiment What should you do with the products of an experiment?
WHAT SHOULD YOU DO WITH LEFT OVER CHEMICALS AFTER AN EXPERIMENT? WHAT SHOULD YOU DO WITH THE PRODUCTS OF AN EXPERIMENT? DISPOSE OF IT AND NEVER PUT IT BACK IN ORIGINAL CONTAINER BECAUSE YOU CAN HAVE CROSS CONTAMINATION. HOW CAN YOU DRAW SMALL VOLUMES OF LIQUIDS INTO A PIPETTE SAFELY?
What special precautions should you take when using sharp items like scalpels knives located within a dissection kit?
1. handle scalpels, razor blades, scissors, pins, and dissecting probes with extreme care. 2. never cut material towards you always cut away from you.
When using chemicals should you check the label Select time?
How many times should you read the labels information before you open the container? Three times.
How do you dispose of science experiments?
Laboratory liquid wastes are classified into organic and inorganic wastes. Pour liquid wastes into the designated liquid waste container according to textbooks and instructors. Rinse the glassware with the minimum amount of water, and pour into the liquid waste container.
How do you dispose of chemicals in an experiment?
Most chemical wastes must be disposed of through the EHS Hazardous Waste Program. To have hazardous waste removed from your laboratory, do the following: Store chemical wastes in appropriate containers, plastic bottles are preferred over glass for storing hazardous waste when compatibility is not an issue.
How do I dispose of chemicals safely?
When these products are discarded, they become “household hazardous waste.” In California, it is illegal to dispose of household hazardous waste in the trash, down the drain, or by abandonment. Household hazardous waste needs to be disposed of through a Household Hazardous Waste Program.
What are 5 precautions that must be taken before beginning an experiment?
List 5 precautions that must be taken before beginning an experiment.
- Wash hands.
- Remove any jewelry.
- Tie back long hair.
- Wear proper clothing (no loose clothes, close-toed shoes, long pants and sleeves)
- Wear safety googles and gloves.
When working in the laboratory you should perform only those activities assigned by your teacher carefully follow all?
Perform only those experiments authorized by your teacher. Carefully follow all instructions, both written and oral. Unauthorized experiments are not allowed. 6.
What do you understand by safety in the laboratory?
Laboratory safety involves the development of skills and responsibility and must be an integral part of every chemistry curriculum. This means that safety awareness must be integrated into each laboratory course including research with increasingly broader scope at more advanced levels.