Chapter 1, Problem 46A

Interpretation Introduction

(a)

Interpretation:

The given statement (1) about laboratory safety needs to be finished so that it states a safety rule.

Concept introduction:

Safety precautions or rules are the actions conducted well in advance to protect against possible danger, failure, injury or a safeguard when the person is using heavy machinery. Safety symbols are the meaningful graphical representations that warn of or identify hazards associated with the location or item.

Answer to Problem 46A

This rule asks the student to study the lab assignment before they visit the lab. In case of queries, the students should consult the teacher.

Explanation of Solution

The complete rule is: Study the lab assignment before students go to the lab. In the case of any queries, ask the teacher. This rule indicates the student to thoroughly going through dos and don’ts in the lab while performing or observing an experiment.

(b)

Interpretation Introduction

Interpretation:

The given statement (2) about laboratory safety needs to be finished so that it states a safety rule.

Concept introduction:

Safety precautions or rules are the actions conducted well in advance to protect against possible danger, failure, injury or a safeguard when the person is using heavy machinery. Safety symbols are the meaningful graphical representations that warn of or identify hazards associated with the location or item.

Answer to Problem 46A

Students should not bring food, beverages or chewing gum to the lab. They should not eat in the lab.

Explanation of Solution

Students should not bring food, beverages or chewing gum to the lab. They should not eat in the lab.

This is because while performing experiments, certain gases are released, the food is exposed to harmful chemicals, moreover touching the food with the same hands you touch the chemicals is also risky. It can have severe health effects.

(c)

Interpretation Introduction

Interpretation:

The given statement (3) about laboratory safety needs to be finished so that it states a safety rule.

Concept introduction:

Safety precautions or rules are the actions conducted well in advance to protect against possible danger, failure, injury or a safeguard when the person is using heavy machinery. Safety symbols are the meaningful graphical representations that warn of or identify hazards associated with the location or item.

Answer to Problem 46A

Students must know where the fire blanket, fire extinguisher and safety shower are kept and how to use them and where the gas and electrical power shutoff are located.

Explanation of Solution

Students must know where the fire blanket, fire extinguisher and safety shower are kept and how to use them and where the gas and electrical power shutoff are located.

This rule indicates the student to be aware of the possibilities that can occur in a lab, most likely fire or accident that involve the use of first-aid kid. Student should know the location of the fire extinguisher safety shower, fire blanket and first aid kit in case there is an emergency such as the lab is on fire or some student is hurt, the person should react without wasting any time.