Write the chemical formula for the following elements
a. Hydrogen
b. Nitrogen
c. Ozone
d. Sulphur

Define molecule.

Give an example for the elements derived from their Latin names

Calculate the atomicity of H₂SO₄.

Aakash noticed that the metal latch on gate was difficult to open during hot sunny days. However, it was not difficult to open the same latch at night. Aakash observed that the latch and the gate are exposed to the sun during day time.
a. Formulate a hypothesis based on the information provided.
b. Briefly state how you would test the hypothesis.