across
8. breaking a compound into its basic elements. (13 letters)
10. to determine the molecular formula, you must be given the ______(9 letters)
11. the "backbone" formula(9 letters)
12. an aqueous solution that always has hydrogen atom to ammonia gas(4 letters)
13.the ion made by adding one extra hydrogen atom to ammonia gas(8 letters)
14.a negative ion containing oxygen covalently boded to another non-metal(8 letters)
15.combining 2 elements to make a compound.(9 letters)
DOWN
1.what happens when hydrogen is ignited in the presence of oxygen (9 letters)
2. Sherlock found that the poison was ______(8 letters)
3. a reaction that always involves combining with oxygen (10 letters)
4. the "real" formula(9 letters)
5. a method of decomposing water(12letters)