1. is D. Scientific method cannot be replaced.
2. is B.
3. is B as well.
The size has gotten smaller, they last longer, easier to carry around, safer, etc
Answer:
Atoms found in nature are either stable or unstable. ... An atom is unstable (radioactive) if these forces are unbalanced; if the nucleus has an excess of internal energy. Instability of an atom's nucleus may result from an excess of either neutrons or protons
Answer:
They would keep on moving but unless being acted upon or stop slowly because of the friction
Explanation:
Answer:
3 electrons from nitrogen and 3 from carbon while carbon already has a lone pair along with a negative charge (called cyanide)
