Matter Does Not Vanish
Matter Does Not Vanish is a Grade 7 science concept from Amplify Science (California) Chapter 3: Accounting for Atoms, demonstrating the Law of Conservation of Matter. When substances burn or dissolve and appear to disappear, atoms simply change state or become invisible gas — they are not lost. Tracking atoms proves that all matter is still present even when invisible.
Key Concepts
When a substance burns or dissolves, it may seem to disappear, but matter never vanishes.
It simply changes state or becomes invisible to the naked eye.
Common Questions
Does matter disappear when something burns?
No. When something burns, it appears to disappear but the atoms are still there — they have simply transformed into gas (like CO2 and water vapor) that escapes into the air. The total amount of matter is conserved.
What is the Law of Conservation of Matter?
The Law of Conservation of Matter states that atoms cannot be created or destroyed in a chemical reaction. The total number and type of atoms must be the same before and after any reaction.
How can scientists prove that matter does not vanish?
Scientists trace atoms by tracking reactants and products carefully. In a closed system, measuring mass before and after a reaction shows it remains constant, proving atoms are present even when products are invisible gases.
What do Grade 7 students learn about conservation of matter in Amplify Science?
In Chapter 3 of Amplify Science California Grade 7, students investigate burning and dissolving reactions to discover that matter appears to vanish but atoms are conserved, establishing the foundational principle of conservation of matter.