Organic Chemistry Club -Session 1

Which of the following group of elements are relatively unreactive?

• Halogens

• Noble gases

• Metals

• Non-metals

Atomic number is equal to.................

• no. of protons + neutrons

• no. of protons + electrons

• no. of neutrons

• no. of protons = no. of electrons

Which of the following is positively charged?

• Electrons

• Protons

• Neutrons

• Atoms

Mass no. is equal to............

• no. of neutrons

• no. of protons

• no. of protons + electrons

• no. of protons + neutrons

.....................is a pure chemical substance that cannot be broken down into other substances.

• A molecule

• An electron

• An element

• A nucleus

Which of the following is not a molecule?

• CH₄

• CO₂

• C

• H₂

The nucleus of an atoms contains...............

• protons

• neutrons

• protons + neutrons

• Protons + electrons

Any atom is neutral because..........

• no. of electrons, protons and neutrons are the same

• no. of protons = no. of neutrons

• no. of electrons = no. of neutrons

• no. of electrons = no. of protons

How can you describe your level of understanding of today's session?