What is the primary unit used to measure mass in the lab?

• Pound

• Kilogram

• Gram

• Milligram

How does a laboratory scale measure mass accurately?

• By measuring the volume of the object

• By using a digital sensor

• By using a spring mechanism

• By eliminating the effect of gravity

Which piece of equipment is the most common but least accurate for measuring volume?

• Beaker

• Graduated cylinder

• Buret

• Volumetric flask

What is the primary use of flasks and beakers in the lab?

• To grind chemicals

• To weigh chemicals

• To store, mix, and heat liquids

• To measure volume accurately

What is the purpose of a wash bottle in the lab?

• To dispense distilled water

• To measure volume

• To store chemicals

• To heat liquids

Which equipment is used to grind chemicals?

• Test tube

• Transfer pipette

• Mortar and pestle

• Clay triangle

What is the function of a stirring rod?

• To hold test tubes

• To measure volume

• To heat chemicals

• To stir solutions

Why is wire gauze used in the lab?

• To dispense liquids

• To hold test tubes

• To protect the desk from hot objects

• To measure mass

What should you do to minimize the risk of lab hazards?

• Wear open-toed shoes

• Keep hair tied back

• Leave materials near flames

• Ignore emergency equipment

What is the last step you should always do at the end of a lab session?

• Leave the lab immediately

• Wash your hands

• Remove your lab coat

• Turn off the lights