Safety matters related to the use of acids and alkalis 10.7 Safety matters related to the use of acids and alkalis.

Slides:

Advertisements

Similar presentations

Lab Safety Milton High School.

Advertisements

C ORROSIVE C HEMICALS 2010 Safety Manual & Laboratory Safety Chemical Hygiene Plan, p M AY 10, 2011.

Choose the appropriate tools or instruments and use relevant safety procedures to complete scientific investigations.

Acids and Bases. Acids Acids are substances that release hydrogen ions, H +, in solution Acids are substances that release hydrogen ions, H +, in solution.

Part 1Introduction Part 2What are the properties of acids? What precautions we have to take in diluting acid? Part 3Daily examples of acids Part 4Questions.

How Do Scientists Work In A Lab? Lab Safety Safety rules (AISD and Class) MSDS and Chemical Labels MSDS LAB MSDS LAB Quiz.

Science Lab Safety Rules

The Nature of Science: Unit 1A Safety, Equipment, and Measurement.

27 April 2001Carmen Omota 1 A Presentation by Carmen Omota.

Chemistry Presentation Name: Wing Sze Class: F.3B (28) Compound assigned: Na2O.

The Discovery of Chemical Change Through the Chemistry of Copper

ASSIGNMENT BOOK Unit 10 Part 2 Part 2 Integrated Exercises (Unit Test) A. True or False (Total 20 marks; 2 marks each) Study the following statements.

Dilution Calculations Example 5. Concentrated hydrochoric acid, HCl, is shipped in bottles of 36% HCl, in which the [HCl] = M.

CHEMICAL PROTECTIVE CLOTHING

Acids and Bases An Introduction. Acids A group of chemical compounds (more than one element) with similar properties Solutions of acids have a sour taste.

An Introduction to WHMIS The Workplace Hazardous Materials Information System.

STANDARD OPERATING PROCEDURES (SOP’s)

10.2 Laboratory acids and alkalis - In the laboratory, the commonly used acids are p.9 nitric acid sulphuric acid hydrochloric acid They are all colourless.

Safety Symbols. Disposal Alert This symbol appears when care must be taken to dispose of materials properly.

Chapter 1, Section 5.  We will leave page 10 blank. This is where the vocabulary belongs. Once we complete our lab safety instruction manual project,

Unit 10 Unit 10 Summary check-point Unit 10 Unit 10 Summary check-point.

1. What is the Question of the Day? 2. What do you have to write down? Acceptable Answer: 1. Question of the Day = At the bell (1 st thing you do every.

1. General Rules 2. Rules regarding Heating & Mixing 3. Rules regarding Accidents.

Lab Experiment 2: Copper Cycle September 7, 2011.

Lab Safety. When working in the Laboratory …. Tie back loose clothing Do Not wear open- toed shoes Wear goggles.

Acids are electrolytes that: þ Produce H + (as H 3 O + ) ions in water – always listed first in the formula þ Turn blue litmus red þ Taste sour þ Corrode.

 Be cognizant of the following vocabulary words.. › Acid › Base › Indicator › Phenolphthalein › Hydronium ion › Hydroxide ion › Neutralization › Precipitate.

pH What is the pH of an ACID? Which type of OXIDE forms an ALKALI? Which type of OXIDE forms an ACID? What happens to the pH of an ACID when it is diluted?

The Chinese University of Hong Kong PGDE The Chinese University of Hong Kong PGDE Presentation Package for a Chemistry Lesson ACIDS.

Salts By Amy Badger.

Chapter 1: The Nature of Physical Science

Lab Safety Rules month day, year K. Worsham Chemistry Science Class/Lab.

Chemistry 8/29/14 & 9/2/14 1)When mixing known liquids in a lab, students should mix the liquids in a – a.Biuretb. Graduated cylinder c.Pipetd. Beaker.

An Introduction to Acids & Bases VCE Chemistry Unit 2: Environmental Chemistry Area of Study 1 – Water.

Safety Practices for Science Students.

Tips for using Acids in School Labs

Introduction to the Electronics Laboratory

The Nature of Science: Unit 1A Safety, Safety Symbols and Measurement.

Your life depends on it!! Essential Questions How do you stay safe in a lab? Why is safety important?

Lab Safety Follow these rules to stay safe in the science laboratory.

Workplace Hazardous Materials Information System (WHMIS) Hazardous Household Product Symbols (HHPS) There are two systems of hazardous materials labeling.

Lab Safety Rules. Basic Safety Rules Use common sense. No unauthorized experiments. Handle chemicals/glassware with respect.

1. What is the Question of the Day? 2. What do you have to write down? Acceptable Answer: 1. Question of the Day = At the bell (1 st thing you do every.

Science TAKS: Bell Ringers Prepared for the Scurry-Rosser High School Science Department Objective 1, B.01A The student will demonstrate an understanding.

You will be doing many laboratory activities, which require the use of hazardous chemicals and expensive lab equipment. To ensure a safe science classroom,

Unit 10 – Common Acids and Alkalis ETV. Not everything is edible. Human is not sensitive towards acids and alkalis. Acids are tasteless. Alkalis are tasteless.

Chemical Hazards I Master Notes. Chemical Hazards Certain chemical substances are more harmful than others A poisonous substance is called a toxin.

LAB RULES Protect your safety!. Rule #1 Conduct yourself in a responsible manner at all times in the laboratory. What that means: Failure to follow the.

Chem "Discovery Action" 1 Chemistry “ Discovery Action ” Topic 2 – The hazardous nature of acids and alkalis [Part1-Power Point version: 1.0]

Rules for good safety laboratory practice SMKN 13 Bandung.

Acids and Bases An Introduction.

General Lab Safety Always wear eye protection Use close-toed shoes

Do now! Can you continue yesterday’s experiment?

Acid/Base Safety.

Laboratory Safety Rules.

Laboratory Safety It is your responsibility to protect yourself and other students in a safe manner while in the laboratory. You can avoid accidents in.

Red Cabbage Indicator Year 7 Science.

Radioactivity radioactive materials present. Radioactivity radioactive materials present.

Radioactivity radioactive materials present. Radioactivity radioactive materials present.

Acids & Alkalis Crossword

UNDERSTANDING ACIDS and ALKALIS

Activity 2 Types of Hazards.

Strength of Acids and Bases

Laboratory Safety It is your responsibility to protect yourself and other students in a safe manner while in the laboratory. You can avoid accidents in.

Radioactivity radioactive materials present. Radioactivity radioactive materials present.

Hydrochloric Acid Hydrochloric acid solution (approximately 1 M):Beware of acid mist, do not wear contact lenses, wear safety glasses. In a fume cupboard,

Presentation transcript:

Safety matters related to the use of acids and alkalis 10.7 Safety matters related to the use of acids and alkalis

p.50 Corrode skin, clothes, metals and marbles - Strong acids and alkalis are highly corrosive.

- Acids commonly used in the laboratory: Nitric acid Sulphuric acid Hydrochloric acid

- If acids/alkalis are splashed onto skin or eyes, it can cause serious burns. What are the treatments for these accidents? - Vapour of strong acids/alkalis may hurt the eyes and the respiratory system. How to avoid these accidents?

- The following household cleansers contain strong acids/alkalis: This toilet cleanser contains hydrochloric acid. These drain cleansers contain sodium hydroxide. p.50

Caustic ( Caustic ( 哥士的 ) oily stains. Solids of sodium hydroxide ( 哥士的 ) can be made into solution for removing oily stains. What safety precautions should we take?

- Commercial products containing acids or alkalis are often sold in form of concentrated solutions. What are the advantages of selling products in form of concentrated solutions? - These concentrated solutions contain low proportion of water and high proportion of acids or alkalis. => => Diluting before use

- For safety, we should follow proper procedures in diluting concentrated solutions. water concentrated acid/alkali p.53 Release a large amount of heat and concentrated acids/alkalis will spurt out. Should not add water to concentrated acids/alkalis

- Proper procedures in diluting concentrated acids/alkalis: water concentrated acid/alkali wear gloves, goggles and protective coats carry out the dilution inside a fume cupboard or ventilated area slowly add concentrated acid/alkali to a large amount of water continuously stir the solution