How do you know if a chemical equation is balanced? What can you change to balance an equation? Play a game to test your ideas!

In this activity, students explore reactions in which chemical bonds are formed and broken. Students experiment with changing the temperature and the concentration of the atoms in order to see how these affect reaction rates. They also learn how to communicate what happens during a chemical reaction by writing the ratios of reactants and products, known as stoichiometry.

In this lesson, students further their knowledge of redox titrations while examining the pressures that contamination and climate change put on access to clean water.

Step 1 - Inquire: Students observe a field scientist testing the dissolved oxygen content of the Hudson River and generate questions.

Step 2 - Investigate: Students apply the Winkler Method as a tool for assessing the health of bodies of water and identify the stresses placed on water sources by climate change.

Step 3 - Inspire: Students explore Sustainable Development Goal #6 and consider what steps they can take to protect the drinking water in their communities.

This activity is an instructional activity that can be used in AP Chemistry with Topic 1.1.  The activity has students arrange samples with different units in three different ways to show that they know how to perform different mole problem calculations.

Conceptual Chemistry is a year-long course based on CK-12 OER instructional material and supplemented with limited commercially-available materials. The course is project-based, argument-driven inquiry. Each quarter begins with presentation of an intriguing phenomenon, followed by an essential question about the phenomenon, and a project centered on answering that essential question. Throughout the quarter, students conduct research and investigations to answer portions of the question. Each unit has a student "Task" at the end that serves as an assessment of the unit's concepts. At the end of each quarter, students assemble all of the unit tasks and synthesize a personal final project that answers the essential question in a personal context chosen by the student.

Objectives: To use models and particle diagrams to represent the law of conservation of matter and energy in a chemical reaction.To write and determine the ratio of reactants to products, through the use of adding coefficients. To classify various types of chemical reactions.

Students learn about material balances, a fundamental concept of chemical engineering. They use stoichiometry to predict the mass of carbon dioxide that escapes after reacting measured quantities of sodium bicarbonate with dilute acetic acid. Students then produce the reactions of the chemicals in a small reactor made from a plastic water bottle and balloon.

This unit dicusses the law of conservation of mass, as well as teaches the fundamentals of balancing chemical equations. 

The Integrated Conceptual Science Program Course 1 Integrated Physics and Chemistry is a three dimensional course based on the Conceptual Progression Model of the Next Generation Science Standards. It is designed to be used as part of a three course program that addresses all high school science performance expectations. Course 1 is designed for ninth grade students.
This resource includes the teacher materials, supporting documents, and short videos to support teachers in using the materials.
The Courses were designed using the Ambitious Science Teaching (AST) framework. It is strongly encouraged that before using these materials that you be familiar with AST. We suggest that you watch the AST Overview short video found here: https://datapuzzles.org/ambitious-science-teaching and explore this Google Slide deck that contains many resources designed to further your understanding of AST: https://docs.google.com/presentation/d/1WOUVmlm636_7i2l0GYa9JkX1TCK3NMdySfpxKN7IM7A/edit?usp=sharing

Patterns Chemistry is an instructional resource for a year-long high school introductory chemistry course. It meets many of the physical science standards from the Next Generation Science Standards, as well as some earth science standards.

The Patterns High School Science Sequence (https://hsscience4all.org/) is a three year course pathway and curriculum aligned to the Next Generation Science Standards (NGSS).

Each course utilizes:
- Common instructional strategies
- Real world phenomena
- Design challenges to engage students and support their learning.

For more information, contact us at info@pdxstem.org.

The curriculum is a combination of teacher-generated and curated open-content materials. The Teacher-generated materials are shared freely under a Attribution-NonCommercial-Sharealike Creative Commons License.

Explore what makes a reaction happen by colliding atoms and molecules. Design experiments with different reactions, concentrations, and temperatures. When are reactions reversible? What affects the rate of a reaction?

Explore what makes a reaction happen by colliding atoms and molecules. Design experiments with different reactions, concentrations, and temperatures. When are reactions reversible? What affects the rate of a reaction?

Here is resource crafted by an experienced chemistry teacher to assist you and your students in learning stoichiometry.  Please feel free to use and modify to suit your needs in the classroom.