2025 DSE 考生 - 東華三院甲寅年總理中學
One important chemistry lesson is the concept of the periodic table. The periodic table is a tabular arrangement of chemical elements, organized based on their atomic number, electron configuration, and recurring chemical properties. It is a fundamental tool that helps us understand the behavior and relationships of elements.
The periodic table provides a systematic way to classify and categorize elements, making it easier to study and comprehend the vast array of chemical substances. It allows us to identify trends and patterns in the properties of elements, such as atomic radius, electronegativity, and reactivity. These trends help us make predictions about the behavior of elements and their compounds.
The periodic table also provides a framework for understanding chemical bonding and the formation of compounds. It helps us determine how elements combine with each other to form molecules and compounds, based on their electron configurations and the concept of valence electrons. This knowledge is crucial in fields such as materials science, drug discovery, and environmental chemistry, where understanding chemical interactions