Across
- 2. amount of matter stays the same, even when matter changes form
- 4. the number in front of the formula
- 7. substance specific identification group of atomic symbols and fixed ration subscripts
- 8. organic chemical compound that is composed exclusively of hydrogen and carbon atoms
- 10. symbolic representations of chemical reactions in which the reactants and the products are expressed in terms of their respective chemical formula
- 12. occur when parts of 2 ionic compounds are exchanged, making 2 new compounds
- 15. chemical process in which a substance reacts rapidly with oxygen and gives off heat
Down
- 1. a reaction in which one element is substituted for another element in a compound
- 3. an arrow that is placed after the reactant or reactants, points in direction of products
- 5. a positive or negative charge on a atom
- 6. rearrangement of the molecular or ionic structure of a substance, opposed to a change in physical form or a nuclear reaction
- 9. equations with simply the chemical formulas of the products and reactants, no mention of state
- 11. chemical equation where mass is conserved and there are equal numbers of atoms of each element on both sides of the equation
- 13. production of chemical compounds reaction from simpler materials
- 14. a reaction in which a compound breaks down into 2 or more substances