Answer:
1)Around 450 B.C., the Greek philosopher Democritus introduced the idea of the atom.
2)All matter is made of atoms, Atoms are indivisible and indestructible.Compounds are formed by a combination of two or more different kinds of atoms, A chemical reaction is a rearrangement of atoms.
3)B
Explanation:
Metallic bonds<span>, the valence electrons from the s and p orbitals of the interacting metal atoms delocalize</span>
Answer:
A - Chemical potential energy being converted to heat energy
Explanation:
Yes it is a pure substance
Spillages on a tiled floor, a highly polished floor surface, a damp smooth surface with no mat.
