What is an atom made of

The video explains the fundamental concept of atoms, the building blocks of matter. It covers the structure of atoms, including protons, neutrons, and electrons, and introduces isotopes. The Bohr model is used to illustrate atomic structure, with carbon as an example. The video also discusses molecular bonds, focusing on covalent bonds and ions, using oxygen and sodium chloride as examples.

What are the smallest components of matter called?

• Molecules

• Atoms

• Compounds

• Mixtures

Which subatomic particle carries a positive charge?

• Photon

• Proton

• Electron

• Neutron

Why is the mass of electrons usually not considered in atomic mass calculations?

• They have a positive charge

• They have almost no mass compared to protons and neutrons

• They are too small to measure

• They are located outside the nucleus

In the Bohr model, how are electrons arranged around the nucleus?

• In a random pattern

• In a single shell

• In multiple shells

• In a straight line

What is the most common form of carbon composed of?

• 8 protons, 6 neutrons, 8 electrons

• 6 protons, 8 neutrons, 6 electrons

• 8 protons, 8 neutrons, 8 electrons

• 6 protons, 6 neutrons, 6 electrons

What type of bond involves the sharing of electrons between atoms?

• Ionic bond

• Hydrogen bond

• Covalent bond

• Metallic bond

What happens to sodium and chloride ions when dissolved in water?

• They form a solid

• They remain bonded

• They separate as ions

• They evaporate