ChemThink Chemical Reactions

Each comma separates answers for each blank
1. Reactants
2. Products
3. Chemical Reaction
4. Changing
5. Breaking, Forming
6. Materials
7. New, Less
8. Create a change
9. 2, 1, the, 1
10. H: 4 atoms in reactants, 2 atoms in the products, O: 2 atoms in the reactants, 1 atom in the products.
11. A balanced reaction
12. elements, atoms
13. 3,1,3
14. 1,1,1,1
15. 2, 2
16. O, Cu, Cu
17. 3,1,3
18. 1,2,2,1
19. 1,3,2
20. 2,2,6
21. 4,6,4,6

Summary:
1. A change in chemical bonds of atoms.
2. Present before and after the chemical reactions.
3. Number, atoms