experiment_1_

Safety Information - General Policy

General Safety Rules:

• Maintain alertness and be aware of hazards

• Know locations of emergency equipment (eyewash, safety shower, fire extinguishers)

• Dress appropriately (lab coat, gloves, safety glasses)

• No food, drink, or smoking in the lab

• Report any accidents or spills immediately

• Consult Safety Data Sheets (SDS) when in doubt

Safety Responsibilities

Responsibilities of Staff and Students:

• Ensure personal and others' safety

• Comply with safety policies and practices

• Report accidents and hazards

• Use equipment and protective gear as instructed

Personal Protective Equipment (PPE) in the Lab

• Lab Coats: Required in all chemistry lab classes

• Footwear: Enclosed footwear only, no sandals or thongs

• Gloves: Disposable gloves for handling dangerous materials

• Safety Glasses: Mandatory during chemical handling and experiments involving heat or corrosives

Use of Fume Cupboards

Before Use:

• Ensure suitability and operational status

During Use:

• Maintain proper airflow, use minimum hazardous substances

After Use:

• Clean and check for smell indicative of filter saturation

Common Risks in Chemistry Labs

Risks and Proper Responses:

• Spills: Rinse under water immediately

• Burns: Avoid handling hot glassware without protection

• Cuts: Handle glassware carefully to avoid breakage

• Eye Injuries: Immediate rinse with water if chemicals enter eyes

• Fire: Use appropriate extinguishing methods and evacuate if necessary

Importance of Lab Work

Key Outcomes from Lab Work:

• Learning safe handling and identification of chemicals

• Developing practical skills and understanding of procedures

• Enhancing transferrable skills such as teamwork, problem-solving, and communication

Laboratory Techniques

• Transferring Solids: Using a metal spatula; do not return excess to stock

• Transferring Liquids: Pour carefully to avoid spills and contamination

Using Droppers

Caution with Droppers: Avoid cross-contamination, do not invert

Using Pipettes

Proper Handling of Pipettes: Technique for filling, discharging, and draining

Measurements, Calculations, and Accuracy

• Exponential Notation: For large/small numbers; arithmetic rules apply

• Significant Figures: Importance in measurements to reflect accuracy

Useful Information for Laboratories

Common Reagents and Concentrations:

• E.g., HCl, HNO3, NaOH concentrations provided

Types of Chemical Reactions

Definitions and Examples:

• Acids: Donate H+ ions

• Bases: Accept H+ ions

• Reactions: Neutralization, oxidation, displacement, decomposition, precipitation

General Chemical Reactions

Common Reaction Types: Descriptions of acid-base, decomposition, and redox reactions

Experiment Overview

Experiment 1 Tasks: Understanding safety, techniques, accuracy, and recording observations in lab reports.