Answer:
the anion OH having one oxygen and one hydrogen atom.
Explanation:
Answer: The force which exists between particle of same kind of substance called cohesion force. A . B . The force of cohesion is defined as the force of attraction between molecules of the same substance.
Explanation:
Only A. Formation of a gas indicates a chemical reaction.
The other three choices are all physical changes.
Answer:
During chemical reactions are broken and to form new substances with different properties, but mass is still .
Here is the complete sentence: After a rock break down, materials that are left combine with organic materials to form SOIL.
The process by which rocks are broken down is called weathering. There are different type of weathering, but the resultant effect of all of them is to break down rocks into smaller particles. The broken down particles usually combine with mineral content, moisture, gases and humus in order to form a complete soil.