Solve these clues to fill the grid.
- Any of several complex proteins that are produced by cells and act as catalysts in specific (plural)
- 7 Across
- Substance used in or made by chemistry
- 8 Across
- The simplest structural unit of an element or compound (plural)
- 10 Across
- A particle that is electrically charged (plural)
- 11 Across
- The branch of geology studying the folding and faulting of the earth's crust
- 12 Across
- The power to do work or make things move
- 14 Across
- Any of several chemical elements that are usually shiny solids that conduct heat or electricity (plural)
- 15 Across
- Hard piece of stone (plural)
- 16 Across
- A process in which one or more substances are changed into others
- 1 Down
- A tabular arrangement of the chemical elements according to atomic number as based on the ___
- 2 Down
- The act of passing from one state or place to the next
- 3 Down
- A substance formed by chemical union of two or more elements or ingredients in definite proportion (plural)
- 4 Down
- Any of various water-soluble compounds having a sour taste and capable of turning litmus red (plural)
- 5 Down
- An abstract part of something (plural)
- 6 Down
- Any of the monovalent ___ of group I of the periodic table (plural)
- 9 Down
- The smallest component of an element having the chemical properties of the element (plural)
- 13 Down