Atoms, Molecules, and Reactions

Atoms, Molecules, and Reactions

Grade 6 · Science · 45 min

What's Included

Learning Objective

I can build a model to show that the number of atoms stays the same during a chemical reaction, so mass is conserved.

Warm-Up Video

Unknown Channel · 5:00

Chemical and Physical Changes – Quiz Edition

Practice Questions

7 questions · Short answer

Exit Ticket

Quick comprehension check

If you start with 2 atoms of hydrogen (H) and 1 atom of oxygen (O), and they react to form water (H₂O), how many atoms of hydrogen and oxygen are in the water molecule? In the reaction CH₄ + 2O₂ → CO₂ + 2H₂O, how many carbon (C) atoms are there on the left side of the equation (reactants)? How many carbon atoms are there on the right side of the equation (products)?

Complete Lesson Package

Get all 3 ready-to-use resources:

Teacher Guide
Student Doc
Slides