<span>B. When two molecules collide with enough force, old chemical bonds are broken and new bonds form, resulting in one or more new substances</span>
The atomic nucleus contains the protons and neutrons, which take up most of an atoms mass.
Answer: <span>c. protons and neutrons</span>
Answer:
c2h4 (etthane........
bexcuse it has 6 bond of hydrogen
Answer:
A. Oxygen is an element because its most basic unit is a single type of atom.
Explanation:
Oxygen is the chemical element with the symbol O and atomic number 8.
Oxygen is a pure substance, as it is composed of only a single kind of atom. Which is the oxygen atom, it cannot be broken or degraded down any further into constituents that make up the element. In terms of both chemically and physically.