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Safety Practices for 8th Grade Science Students.

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Presentation on theme: "Safety Practices for 8th Grade Science Students."— Presentation transcript:

1 Safety Practices for 8th Grade Science Students

2 Working with Heat Fire or

3 Heat or Fire

4 When working with heat or fire, you will need to wear safety goggles.
To move hot objects you will need to use the right tongs. Different types of containers use different sets of tongs.

5 1. Use a hot plate only when specifically instructed.
2. If you have long hair, pull it away from your face or put in a ponytail. 3. Use tongs or heavy gloves to handle hot items.

6 4. Do not put your face or hands over any boiling liquid.
5. When heating chemicals or other materials, be sure the containers are made of heat-proof glass.

7 6. Never point container at anyone while it is being heated.
7. Keep all extra materials away from heat sources. 8. Handle hot liquids with care.

8 9. Turn off the heat source as soon as you are finished with it.
Do not move the hot plate or burner. Hot and cold glassware look exactly the same.

9 Electrical Equipment Working with

10 Electrical Hazard

11 1. Do not leave electrical cords where someone could trip over them.
2. Keep cords away from a heat source and water. 3. Never touch electrical equipment or cords with wet hands.

12 4. Turn off all equipment when finished with an investigation.
5. Grasp the plug to disconnect equipment. Do not pull on the cord.

13 Sharp Objects Working with

14 Sharp/Pointed Object

15 1. When cutting, place the object on a flat surface
1. When cutting, place the object on a flat surface. Do not hold it in your hand. 2. Always handle sharp instruments carefully. They can cause severe cuts if used incorrectly.

16 3. Do not walk fast or run with sharp objects in your hands.
4. Always cut away from your body and others.

17 Chemicals Working with

18 When working with chemicals, you will need to wear safety goggles
When working with chemicals, you will need to wear safety goggles. Regular eyeglasses do not give adequate protection. Many chemicals require the use of gloves. Check your MSDS sheet or lab write-up for the right equipment.

19 Many chemicals can stain or dissolve fabrics
Many chemicals can stain or dissolve fabrics. Aprons should be worn to protect your clothing. Check your lab write-up or MSDS sheet to determine if tongs are needed to handle containers of chemicals.

20 1. Keep your hands away from your face, eyes, and body while using solutions.
2. Don’t taste test papers such as pH or litmus. Never place testing chemicals such as Benedict’s Solution in your mouth. 3. Dispose of litmus paper, wooden splints, tooth picks,and paper towels in the appropriate, designated container.

21 4. Label and date all containers that are used to hold chemicals.
The white patch on many pieces of glassware can be used to mark the containers. Use a pencil to mark on these patches. Erase marks when you are finished using the glassware. If no white patch is present, a china marker or wax pencil can be used.

22 Many chemicals that you use are classified as toxic.
Toxic substances are poisonous. The toxic substance can be a chemical or a toxin produced by a plant, animal, or pathogenic bacteria.

23

24 Corrosive Substance

25 Corrosive chemicals are substances that, by direct contact, cause injury to body tissue.
The injury may be slight causing a minor burn or irritation or it may be severe enough to destroy body tissue. The chemical action that occurs depends on the chemical properties of the substance.

26

27 1. Acids and bases easily react with other substances.
2. When acids are combined with water they can splash and get on your hands, your face, or in your eyes.

28 NOT the other way around.
3. If you get any chemical on your clothes or your skin, notify the teacher immediately. 4. If you need to combine an acid or a base with water, remember: Always add acids and bases to water NOT the other way around.

29 Final Reminders

30 Always follow your teacher’s instructions when:
modifying lab procedures. performing activities outside the lab procedure. an injury occurs.

31 Always follow your teacher’s instructions when:
throwing away chemicals and other materials. cleaning up spilled materials. cleaning up broken glassware.

32 Horseplay or Fooling around in the laboratory!
No Horseplay or Fooling around in the laboratory!

33 Work comes before talking! Always Practice Lab Safety
Laboratory or or or or Work comes before talking! Always Practice Lab Safety


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