---
title: Gases and Air
created: '2026-05-26'
updated: '2026-05-26'
type: lesson_topic
subject: science
tags:
- science
- grade-2
- homeschool
- ngss
standard: 2-PS1, 2-PS4
phase: 1
phase_name: 'FALL: Physical Science - Matter and Its Interactions (Weeks 1-10)'
weeks:
- 9
source: ''
---
# Gases and Air
Second grade science topic covering gases and air. Part of Phase 1 (FALL: Physical Science - Matter and Its Interactions (Weeks 1-10)).
## Key Concepts
Understanding invisible matter
- **Objectives:** Recognize gases take up space
- **Activities:**
- Air bubble experiments
- Blow up balloons without touching
- Submerge cup in water (air pocket demo)
- **Assessment:** Gas property explanation
### Week 10: States of Matter Review & Testing
**Focus:** Review and assess understanding
- **Objectives:** Identify all three states of matter
- **Activities:**
- States of matter scavenger hunt
- Review games and sorting activities
- Unit quiz through hands-on demonstration
- **Assessment:** End-of-unit project or demonstration
---
## Standards
2-PS1, 2-PS4
## Related Topics
[[introduction-to-scientific-observation]], [[properties-of-materials]], [[hard-soft-rough-smooth]], [[flexible-vs-rigid-materials]], [[absorbent-materials]], [[solids-liquids-gases-introduction]], [[solids-deep-dive]], [[liquids-deep-dive]]
---
*Generated from curriculum data* ^[[raw/curriculum/science]]