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5th Grade Science: Atoms and Molecules
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5th Grade Science: Atoms and Molecules
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25 Questions

1. A negatively charged particle of an atom with an extremely small mass; travels around the nucleus

2. A substance that changes color when exposed to acid or base solutions

3. the study of matter

4. What is the difference between covalent bonding and ionic bonding?

5. Since most cleaners used to clean up spills in the kitchen are bases, what can you assume about the pH of most foods.

6. Why do some atoms bond with other atoms?

7. A special machine scientist use to smash atoms

8. What does the chemical formula H2O tell a scientist? What is the common name for H2O?

9. Abbreviations for the names of elements

10. What does the chemical formula H2CO# tell you about the compound known as carbonic acid?

11. What scientist think about atoms based on repeated observations of how atoms act in experiments

12. The vertical columns of the periodic table in which all elements in each column have the same number of electrons in their outer shell.

13. Examples of acids.

14. What happens in a Synthesis Chemical Reaction?

15. Explain why all compounds are molecules but not all molecules are compounds.

16. The horizontal rows of the periodic table in which all elements in each row have the same number of shells.

17. the smallest piece of an element

18. An ionic compound produced from a reaction between acid and a base.

19. The number of protons in the nucleus of an atom

20. When atoms join with different atoms

21. Forms hydroxide when they are dissolved in water. Tastes bitter. Feels slippery. Example is soap.

22. How is the compound H2O different from the elements hydrogen and oxygen?

23. A particle formed when atoms join with other atoms.

24. Why do noble gases rarely undergo chemical reactions?

25. A type of atomic bond in which atoms share electrons

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