1.1 Lab Safety Rules

When you finish working with chemicals, biological specimens and other laboratory substances, always ...

• treat your hands with skin lotion

• wash your hands with soap and water

• wipe your hands on a towel

• wipe your hands on your clothes

What is the correct procedure for students to follow if a chemical is spilled in the laboratory?

• Ask to go to the toilet

• Run out of the room quickly

• Splash large amount of water onto the spill

• Stand back and inform the teacher of the spill immediately

Which of the following is the correct safety rule in the laboratory?

• Dispose corrosive liquids and solids into the sink

• Point the mouth of test tube away from your friend

• Pour the used solutions back into the bottle

• Tamper with electrical sockets

The diagram shows Osman getting ready to carry out an experiment on mixing an acid with an alkali. Which safety precaution did Osman forget?

• He should wear gloves

• He should wear a laboratory coat

• He should wear safety goggles

• He should wear a mask

Study the diagram in figure below. Which of the following safety precautions should be taken by these students when heating some liquid in a test tube?

• Cover the mouth of the test tube with a rubber bug

• Use a wire gauze and tripod stand when heating

• Place the workbook near the burner

• Point away the mouth of the test tube from another person

What does this symbol mean?

• Biohazard

• Umbrella Hazard

• Caution

• Radioactive

What safety Symbol is this?

• Flamable
• Oxidizing Agent
• No Open Flame
• Explosion

_{What is the hazard shown in this hazard sign?}

• Chemical spill
• Toxic
• Biohazard
• Death

_{What is the hazard shown in this hazard sign?}

• Death
• Pirates
• Corrosive
• Toxic

Tags

NGSS.HS-PS1-5

_{What is the hazard shown in this hazard sign?}

• Explosive
• Corrosive
• Irritant
• High level Irritant