Atomic Structure and Period Table of the Elements
The following science standards are addressed in this unit.
HS-PS1-1
Use the periodic table as a model to predict the relative properties of elements based on the patterns of electrons in the outermost energy level of atoms.
Crosscutting Concepts
Patterns: Different patterns may be observed at each of the scales at which a system is studied and can provide evidence for causality in explanations of phenomena.
Science and Engineering Practices
Developing and Using Models:
Develop a model based on evidence to illustrate the relationships between systems or between components of a system.
Use a model to predict the relationships between systems or between components of a system.
Disciplinary Core Ideas:
PS1. A: Structure and Properties of matter
Each atom has a charged substructure consisting of a nucleus, which is made of protons and neutrons, surrounded by electrons
The periodic table orders elements horizontally by the number of protons in the atom’s nucleus and places those with similar chemical properties in columns. The repeating patterns of this table reflect patterns of outer electron states.
PS2.B: Types of Interactions
Attraction and repulsion between electric charges at the atomic scale explain the structure, properties, and transformations of matter, as well as the contact forces between material objects.
9-10.RST.7
Translate quantitative or technical information expressed in words in a text into visual form (e.g., a table or chart) and translate information expressed visually or mathematically (e.g., in an equation) into words.
Bohr Model Basics — Having trouble drawing Bohr models? Watch this!