Chemistry Crossword

4. dissolving
5. the essential facts or principles of a subject or skill.
8. a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.
9. the number of protons in the nucleus of an atom, which is characteristic of a chemical element and determines its place in the periodic table.
11. of or denoting a scale of temperature on which water freezes at 0° and boils at 100° under standard conditions.
12. a conductor through which electricity enters or leaves an object, substance, or region.
14. a stable subatomic particle occurring in all atomic nuclei, with a positive electric charge equal in magnitude to that of an electron.
16. the SI base unit of thermodynamic temperature, equal in magnitude to the degree
18. a subatomic particle of about the same mass as a proton but without an electric charge, present in all atomic nuclei except those of ordinary hydrogen.
19. an instance of giving off something such as a liquid or gas.

1. a substance made by mixing other substances together.
2. the total number of protons and neutrons in a nucleus.
3. emitting or relating to the emission of ionizing radiation or particles.
6. the extent or measurement of a surface or piece of land.
7. the negatively charged electrode by which electrons enter an electrical device.
10. the lowest part or edge of something, especially the part on which it rests or is supported.
12. a stable subatomic particle with a charge of negative electricity, found in all atoms and acting as the primary carrier of electricity in solids.
13. the smallest particle of a chemical element that can exist.
14. is a measure of hydrogen ion concentration
15. the positively charged central core of an atom, consisting of protons and neutrons and containing nearly all its mass.
17. the degree of compactness of a substance.