2006-09-30 14:28:20 · 5 answers · asked by curious 2 in Science & Mathematics ➔ Chemistry
They can be in nuclear reactions. Matter can be destroyed & converted into energy (Einstein's famous e=mc^2 where e=energy, m=mass & c=speed of light). In fission, large atoms are broken into smaller 1's. In fusion, small atoms are combined into a larger 1.
2006-09-30 21:02:15 · answer #1 · answered by yupchagee 7 · 15⤊ 0⤋
Because Dalton said so.
The energy involved in a chemical reaction (which is what Dalton knew of) is so low-level that it cannot destroy an atom. The atoms involved in the chemical reaction simply rearrange themselves into a new compound.
In a nuclear reaction (unknown to Dalton) the energy and radioactive particles tear the nucleus apart to form different atoms.
2006-09-30 21:29:52 · answer #2 · answered by physandchemteach 7 · 0⤊ 0⤋
I think it is called the first law of thermodynamics in conservation of energy. See related URL.
2006-09-30 21:32:32 · answer #3 · answered by FrogDog 4 · 0⤊ 0⤋
Forget the rules. They are moot, well-meaning games of children.
2006-09-30 21:36:29 · answer #4 · answered by Anonymous · 0⤊ 2⤋
They can be. Look up fusion and fission in your textbook.
2006-09-30 21:35:51 · answer #5 · answered by Anonymous · 0⤊ 1⤋