Chemistry Properties and Structure of Matter: Properties of Matter - Naming Allotropes

This lesson covers writing chemical formulae and names of elements and their allotropes. It explains different chemical structures, such as ionic lattices, metallic lattices, molecules, and covalent networks, and their impact on naming and formulae. The concept of allotropy is introduced, with examples like oxygen and sulfur. The lesson provides rules for writing chemical formulae and naming elements, emphasizing the importance of understanding chemical structures.

What is the purpose of using multiplicative prefixes in chemical names?

• To specify the type of chemical bond

• To show the number of atoms in a molecule

• To indicate the charge of ions

• To identify the element's group in the periodic table

Which type of chemical structure is characterized by a 3D shape held together by ionic bonds?

• Ionic lattice

• Covalent network

• Metallic lattice

• Molecular structure

Why can't ammonium be classified as a molecule?

• It has a net charge

• It is a diatomic molecule

• It is a noble gas

• It forms a covalent network

What is the term for the ability of an element to exist in multiple forms?

• Isomerism

• Allotropy

• Polymorphism

• Crystallography

How is the chemical formula for a diatomic molecule like hydrogen represented?

• H

• H+

• H2

• 2H

What is the stoichiometric name for a sulfur molecule made of eight atoms?

• Disulfur

• Tetrasulfur

• Hexasulfur

• Octasulfur

Which element is known for having the most allotropes?

• Carbon

• Oxygen

• Sulfur

• Phosphorus

What is the common name for the allotrope of oxygen that consists of three atoms?

• Ozone

• Dioxygen

• Trioxide

• Peroxide

Which of the following is NOT a diatomic molecule?

• Nitrogen

• Chlorine

• Fluorine

• Neon

What is the chemical formula for a noble gas like helium?

• He2

• He

• H2

• H