Across
- 3. is a property of a physical body.
- 7. is a molecule with the same molecular formula as another molecule, but with a different chemical structure.
- 12. is an electron that is associated with an atom, and that can participate in the formation of a chemical bond.
- 15. A substance that can make a chemical reaction faster but which is not actually needed to produce the reaction nor is used in the reaction.
- 16. A liquid with a pH greater than seven.
- 17. is a lasting attraction between atoms that enables the formation of chemical compounds.
- 18. when a liquid has dissolved as much of a substance as it can.
- 19. A combination of elements into a more complex molecule.
- 20. A liquid with a pH less than seven.
Down
- 1. considered one of the most outstanding figures in the history of medicine.
- 2. is a tabular arrangement of the chemical elements, ordered by their atomic number, electron configurations, and recurring chemical properties.
- 4. are the basic units of matter and the defining structure of elements.
- 5. was an ancient Greek philosopher and scientist.
- 6. The amount of a substance dissolved in a liquid.
- 8. bonds form when one atom gives up one or more electrons to another atom.
- 9. also called a molecular bond; is a chemical bond that involves the sharing of electron pairs between atoms.
- 10. is a branch of physical science that studies the composition, structure, properties and change of matter.
- 11. A measure of the kinetic energy within a system of particles.
- 13. The smallest piece of an atom that can exist in a free state.
- 14. is the process by which an atom or a molecule acquires a negative or positive charge by gaining or losing electrons to form ions.