"Balancing Chemical Equations Crossword (1)": HTML5 Crossword

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2. What is a pure substance composed of two or more elements chemically combined? (8)
5. What type of chemical reaction is when the energy released breaking bonds is greater than creating new bonds, releasing heat? (10)
7. What is a chemical equation with the same number of atoms of each element on both sides of the equation? (8,8)
9. What is the small number that shows how much of an atom is in a molecule? (9)
10. What is the law that states: Matter is neither created nor destroyed, it is only changed? (3,2,12,2,4)
12. What type of chemical reaction is when molecules are "switched" in a reaction? (6,11)
17. What is a change in matter that produces one or more new substances? (8,6)
19. What is the number that shows how many of a specific molecule take place in the reaction? (11)
20. What is a pure substance that is made of one type of atom? (7)

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1. What are the substances formed in a chemical equation? (8)
3. What type of chemical reaction is when molecules break down to less complex substances? (13)
4. What is a model that shows the transformation of a reaction to a product? (8,8)
6. What are the substance(s) being acted upon in a chemical equation? (9)
8. What type of chemical reaction is when molecules are replaced by one other in a reaction? (6,11)
11. What type of chemical reaction is when the energy released breaking bonds is less than creating new bonds, absorbing heat? (11)
13. What is a model that shows the ratio of atoms in a molecule? (8,7)
14. What is a solid that forms from a solution during a chemical reaction? (11)
15. What is a stable particle made from two or more atoms? (8)
16. What type of chemical reaction is when molecules make a more complex substance? (9)
18. What does the arrow sign mean in a chemical equation? (6)