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5th Grade Science Chemical Reactions
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5th Grade Science Chemical Reactions
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20 Questions

1. What signs tell you that a log burning in a fire is a chemical reaction?

2. A new substance produced by a chemical reaction on the right side of the equation. Changes in Color (bleach) - Forms a tarnish (Silver reacts with oxygen or sulfur) - Releases Gas (antacid reacts with water) - Forms a precipitate (soap scum)

3. When scientists describe compounds by combining letters and numbers.

4. What are some properties of matter?

5. How are chemical names and formulas related?

6. What is the minimum number of elements that must combine to form a compound?

7. List the signs of a Chemical Change:

8. a change of matter in size, shape, or state that does not change the type of matter.

9. When corrosion of a metal causes color change.

10. What must be done to a solid to change it into a liquid?

11. A change of matter that occurs when atoms link together in new ways, creating a new and different substance.

12. What would happen if you put a plastic bottle filled with liquid water in the freezer. Explain

13. A substance that is formed by the chemical combination of 2 or more elements. These have properties different from their individual elements.

14. An original substance at the beginning of a chemical reaction on the left side of an equation.

15. The chemical name for rust is ______

16. What make matter change from one state to another?

17. What happens when two Hydrogen molecules combined with an Oxygen molecule?

18. What other chemical reactions affect your life? Give three examples:

19. Some people take steam baths to relax. Why does it feel hot when it condenses on your skin?

20. A solid formed by the chemical reaction of some solutions (Soap Scum)

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