Understanding Molecules and Particles

The video tutorial explains the difference between molecules and particles in chemistry. Molecules are a specific type of particle made up of non-metals bonded covalently. Particles, a broader term, include molecules, ions, atoms, and subatomic particles. The tutorial highlights the use of particles in stoichiometry and emphasizes that while all molecules are particles, not all particles are molecules.

What is the relationship between molecules and particles?

• Molecules are not particles.

• Molecules and particles are unrelated.

• Molecules are a specific type of particle.

• Particles are a specific type of molecule.

What is a defining characteristic of molecules?

• They are made of metals.

• They are made of a single element.

• They are always ionic.

• They are composed of non-metals with covalent bonds.

Which of the following is an example of a molecule?

• Water (H₂O)

• Gold atom

• Chloride ion

• Sodium ion

Which of the following is NOT considered a particle?

• Carbon atom

• Covalent bond

• Electron

• Sulfate ion

What is a polyatomic ion?

• An ion composed of multiple atoms

• A subatomic particle

• An ion made of a single atom

• A molecule with a single charge

In stoichiometry, what does the term 'particles' include?

• Only subatomic particles

• Only ions

• Only molecules

• Molecules, ions, and single elements

What is the main difference between molecules and other particles?

• Molecules have covalent bonds and are made of non-metals.

• Molecules are made of metals.

• Molecules are smaller than other particles.

• Molecules are always charged.