SCIENCE BY EZIO

Chemistry Lab

100

What piece of equipment is used to measure the volume of a liquid accurately?

Answer: Measuring cylinder (Graduated cylinder)

200

Question: Before leaving the laboratory, what is the first thing you should do?

Answer: Wash your hands.

300

Question: Name the piece of equipment used to hold a test tube while it is being heated.

Answer: Test tube holder.

400

Question: Why should the mouth of a test tube never point towards anyone while heating?

Answer: Hot liquid or gas may suddenly splash out and cause injury.

500

Question: A student accidentally spills concentrated acid on the laboratory bench. What should be done first?

Answer: Inform the teacher immediately and follow the laboratory safety procedure (do not wipe it with bare hands).

Element Hunt

100

Question: Which element do humans need to breathe?

Answer: Oxygen

200

Question: Which element is represented by the symbol Fe?

Answer: Iron

300

Question: I am the lightest element in the universe. Who am I?

Answer: Hydrogen

400

Question: I am a yellow solid often used in making sulphuric acid. Who am I?

Answer: Sulphur

500

Question: I am a shiny metal, liquid at room temperature, and used in old thermometers. Who am I?

Answer: Mercury

Riddle Me This

100

I disappear when you drink me,
I have no colour, smell, or taste,
But without me, you cannot survive.
What am I?

Answer: Water

200

I go into dirty water,
But I come out clean.
I help scientists separate solids from liquids.
What am I?

Answer: Filter paper

300

I have teeth but cannot bite.
Scientists use me to make a flame hotter.
What am I?

Answer: A Bunsen burner air hole (Accept Bunsen burner)

400

Riddle:
I can be solid,
I can be liquid,
I can be gas.
You see me every day,
Yet I am always the same substance.
Who am I?

Answer: Water (Ice, liquid water, and water vapour)

500

Take away my first letter, I still sound the same.
Take away my last letter, I still sound the same.
Even remove both, I still sound the same.
I am something every chemist studies.

Answer: Element

Who Am I?

100

• I quoted the Bhagavad Gita after witnessing a historic scientific event.

• I directed a secret research project in the New Mexico desert.

• I later argued against the development of even more powerful nuclear weapons.

J. Robert Oppenheimer

200

• My laboratory notebooks are still radioactive today.

• I named one of the elements I discovered after my homeland.

• My work laid the foundation for modern radiation therapy.

Marie Curie

300

• I imagined transmitting electricity without wires across the Earth.

• A tower I built on Long Island was meant to demonstrate this idea.

• My rivalry with another inventor became known as the "War of Currents."

Nikola Tesla

400

• I made my Nobel Prize-winning discovery using sunlight and simple laboratory equipment.
• My discovery explained what happens when light changes its wavelength after interacting with matter.
• My work opened a new field called Raman Spectroscopy.

Answer: Sir C. V. Raman

500

• I filled notebooks with thousands of mathematical results, many without formal proofs.
• A number associated with a taxi became famous because of a conversation involving me.
• My intuition amazed mathematicians around the world.

 Answer: Srinivasa Ramanujan

Think Like a Scientist

100

Question: Which sense organ should never be used to identify an unknown chemical?

Answer: Tongue (taste)

200

Question: A beaker contains a clear, colourless liquid. Can you say it is water just by looking at it?

Answer: No

300

Question: Why should labels on chemical bottles always be read before using them?

Answer: To avoid using the wrong chemical and ensure safety.

400

Question: A student forgets to wear safety goggles while heating a chemical. What is the biggest risk?

Answer: Eye injury from splashes or broken glass.

500

Question: During an experiment, you notice unexpected bubbles forming in a test tube. What should a good scientist do first?

Answer: Observe carefully, stop if necessary, and inform the teacher before continuing.