Chemistry Puzzle

2. A positively charged subatomic particle found in the nucleus of an atom.
4. A standard unit in chemistry representing a specific number of particles (atoms, molecules).
6. A pure substance consisting only of atoms that all have the same number of protons, like oxygen or iron.
11. The attractive force that holds atoms or ions together.
12. A neutral (no charge) subatomic particle found in the nucleus.
13. A group of two or more atoms held together by chemical bonds.
14. Atoms share electrons to form a bond.

1. The smallest unit of an element that retains its chemical identity.
3. A substance made by blending different molecules or compounds together, but not chemically bonded.
5. A negatively charged subatomic particle that orbits the nucleus of an atom.
7. A substance formed when two or more different elements are chemically bonded in a fixed ratio. Water (H₂O) is a classic example.
8. A scale that measures the acidity or alkalinity of a solution, with 7 being neutral.
9. A substance that increases the rate of a chemical reaction without being used up in the process.
10. One atom transfers electrons to another atom, creating charged ions that attract each other.