Section 1
Matter Does Not Vanish
Key Idea
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.
Key Idea.
Section 1
Matter Does Not Vanish
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.
Section 2
Open vs. Closed Systems
To verify that matter remains, scientists use closed systems where nothing can escape. If you burn steel wool inside a sealed jar, the total mass stays exactly the same.
This experiment provides proof that atoms are not lost; they are just transforming into products that might be difficult to capture in an open system.
Expand to review the lesson summary and core properties.
Section 1
Matter Does Not Vanish
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.
Section 2
Open vs. Closed Systems
To verify that matter remains, scientists use closed systems where nothing can escape. If you burn steel wool inside a sealed jar, the total mass stays exactly the same.
This experiment provides proof that atoms are not lost; they are just transforming into products that might be difficult to capture in an open system.