The AMI albums feel rather light on the chemistry; many people flesh that out with Building Foundations of Scientific Understanding, with correlation chart here: Montessori Trails.
Others may choose to go the route of Inquiry in Action - either in addition to or instead of other options. This pdf of science explorations covers both elementary and middle school (adolescence) and the website includes resources for high school as well.
Perfect for homeschooling Montessori!
From the website:
- Ask scientific questions and investigate them
- Design experiments
- Record observations
- Draw conclusions
- Communicate their findings
- Strategic questioning
- Teacher demonstrations
- Detailed procedures for experiments
- Student activity sheets
- Preparation notes