Across
- 3. a solid product produced during a reaction between 2 aqueous reactants
- 8. to breakdown a molecule into its constituent elements
- 9. equations must be balanced b/c of the law of conservation of _____
- 10. a number in front of a molecular formula to tell you how many molecules there must be so that the equation is balanced
- 13. molecular formulas (e.g. MgCl2 ) must be balanced with subscripts so that the _____ is balanced
- 14. (N O F Cl Br I H) elements that only exist in pairs or in molecules
- 16. a positive ion that is always on the LEFT
- 18. a group of elements whose total charge is zero
Down
- 1. to create a molecule from elements
- 2. a heat resistant bond across different polymer strands
- 4. these elements have the same number of valence electrons and are often used as convenient substitutes for each other
- 5. a negative ion that is always on the RIGHT
- 6. A type of reaction where a cation or anion is substituted in a molecular formula, can be single or double
- 7. carbon forms long chains because it has 4 ____ electrons. It is the only element that forms long chains like this and is liquid at room temperature.
- 11. a solution that has a solid completely dissolved in water and looks mostly translucent
- 12. molecules produced by the rearrangement of atoms in a chemical reaction
- 15. a long carbon chain
- 17. a small # slightly below the element that tells how many of this element there are