Convection Currents Experiment Quiz

What is convection?

• A method of heat transfer in fluids

• A method of heat transfer in vacuum

• A method of heat transfer in solids

• A method of heat transfer in metals

In which states of matter can convection occur?

• Solids and liquids

• Liquids and gases

• Plasma and solids

• Solids and gases

What is the purpose of potassium manganate (VII) in the experiment?

• To act as a catalyst

• To act as a dye

• To act as a reactant

• To act as a solvent

Why should you use tweezers to handle potassium manganate (VII) crystals?

• To avoid contamination

• To avoid skin contact with the chemical

• To avoid touching the hot beaker

• To avoid breaking the crystals

What safety equipment should be worn during the experiment?

• Face mask

• Gloves

• Safety glasses

• Lab coat

Why should you stand to one side while heating the beaker?

• To avoid spilling the water

• To avoid inhaling fumes

• To avoid getting burned if the beaker falls

• To avoid blocking the view

How should the potassium manganate (VII) crystals be added to the beaker?

• In large quantities

• In small quantities

• Dissolved in water first

• Crushed into powder

What happens to the water above the potassium manganate (VII) crystal when heated?

• It rises up

• It remains still

• It evaporates

• It sinks to the bottom

What is formed inside the beaker as a result of heating?

• A chemical reaction

• A convection current

• A condensation

• A precipitation

What is the main purpose of the experiment?

• To observe convection currents in water

• To observe the melting point of potassium manganate (VII)

• To observe the boiling point of water

• To observe the color change of potassium manganate (VII)