Across
- 2. the one- or two-letter representation of an element; symbols are often derived from the Latin name of the element
- 6. a reaction in which one atom or ion in a compound is replaced by another atom or ion
- 8. a reaction that releases heat to the surrounding area
- 9. a fundamental principle of science stating that mass cannot be created or destroyed in a closed system through ordinary chemical or physical means
- 12. a system that can exchange matter and energy with outside sources
- 13. a set of symbols used to describe the elements within a substance
- 15. a chemical reaction; a process that changes substances into new substances (related word: chemical reaction)
- 16. composed of crystals
Down
- 1. a reaction in which two or more elements or compounds combine to form a more complex compound
- 3. solid particles that have been separated from a solution
- 4. a system that cannot exchange matter or energy with anything outside it
- 5. a chemical reaction between two compounds where the cations in two compounds switch the anions they are bonded to, resulting in two new compounds; also called double-displacement reactions
- 7. a reaction that absorbs energy in the form of heat
- 10. a characteristic of a substance that is measurable or observable during a chemical reaction; includes pH, heat of combustion, reactivity, etc.
- 11. the change in state from a solid directly to a gas without passing through the liquid state
- 14. without a clearly defined shape or form