Science Quiz: Respiration and Eye Anatomy

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Questions and Answers

What is the main purpose of the apparatus shown in the diagram?

To demonstrate the heating of a liquid and the properties of gases (correct)
To measure the boiling point of water
To separate a mixture of liquids using distillation
To study the chemical reaction of a substance with heat

The copper point in the diagram is used to measure the temperature of the liquid being heated.

True (A)

What is the function of the wire gauze in the apparatus?

The wire gauze spreads the heat from the burner evenly across the base of the flask, preventing localized heating and potential breakage.

The ______ in the diagram is likely used to heat the liquid in the flask.

<p>burner</p> Signup and view all the answers

Match the following terms with their corresponding parts in the diagram:

<p>Glass flask = The container holding the liquid to be heated Copper point = A device for measuring the temperature Wire gauze = A heat diffuser placed over the burner Burner = The source of heat for the experiment</p> Signup and view all the answers

Flashcards

Respiration type

Respiration is considered an exothermic reaction because it releases energy.

Permanent hardness removal

Removing permanent hardness of water typically involves using chemicals like washing soda.

Weak base identification

The letter representing a weak base among provided options must be identified.

Function of crystalline lens

The crystalline lens helps focus light onto the retina in the human eye.

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Laws of reflection

Two key laws of reflection: The angle of incidence equals the angle of reflection, and the incident ray, reflected ray, and normal lie in the same plane.

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