Topic Details (Notes format)

What is the primary component of the Sun?

What is the SI unit of temperature?

Which acid is found in the human stomach?

What is the chemical symbol for the element iron?

What is the main function of the ozone layer?

Which gas is commonly used in balloons to make them float?

What is the unit of electrical resistance?

Which type of bond is present in sodium chloride?

What is the pH of pure water at 25°C?

Which vitamin is responsible for blood clotting?