Ontario Grade 9 Science Class Practice Exam 2025 - Free Grade 9 Science Practice Questions and Study Guide

The identification of the four main types of chemical bonds includes ionic, covalent, metallic, and hydrogen bonds. Ionic bonds occur between charged ions and involve the transfer of electrons, while covalent bonds involve the sharing of electrons between atoms. Metallic bonds are found in metals where electrons are shared among a lattice of atoms, allowing for properties like conductivity and malleability. Hydrogen bonds, while not as strong as the others, are significant intermolecular forces created when hydrogen is attracted to electronegative atoms, like oxygen or nitrogen.

In this context, the selection correctly identifies ionic, covalent, metallic, and hydrogen as important bonding types within the realm of chemistry. Each of these bonds plays a critical role in the properties and behaviors of different substances, explaining their significance in the study of science. Understanding these bonds is key for exploring how substances interact and form different chemical compounds.