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Basic Chemistry

Subjects : science, chemistry
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Protons and neutrons together; make up the center of an atom






2. An unstable atom in which the nucleus decays (breaks down) releasing particles and energy






3. Indicates the formation of new substances from previous substances






4. Shows the number and types of atoms in a molecule and how they are arranged






5. Atoms that have lost or gained electrons






6. Indicates the number and types of atoms in a molecule






7. Anything that occupies space and has mass






8. An unstable atom in which the nucleus decays (breaks down) releasing particles and energy






9. Shows the number and types of atoms in a molecule and how they are arranged






10. Substance containing two or more elements chemically combined in a fixed ratio






11. Identifies a specific element; equals the number of protons in an atom of each element






12. A covalent bond in which four valence electrons are shared between two atoms






13. Occurs when atoms transfer electrons to other atoms






14. Occurs when atoms share electrons






15. Ending materials of a reaction; found on right side of chemical equation






16. Atoms that have lost or gained electrons






17. Identifies a specific element; equals the number of protons in an atom of each element






18. Subatomic particle having a positive charge; found in nucleus






19. A pure substance that cannot be broken down into other substances by chemical reactions






20. The smallest particle of an element that retains the properties of the element






21. Substance made of two or more elements & one being carbon






22. The starting materials for a reaction; found on left side of chemical equation






23. The starting materials for a reaction; found on left side of chemical equation






24. The smallest particle of an element that retains the properties of the element






25. Protons and neutrons together; make up the center of an atom






26. Electrons in the outermost energy level; they are involved in bond formation






27. Indicates the formation of new substances from previous substances






28. A pure substance that cannot be broken down into other substances by chemical reactions






29. Atoms having the same numbers of protons but different numbers of neutrons






30. Ending materials of a reaction; found on right side of chemical equation






31. Subatomic particle having a negative charge; not in nucleus but surrounds it






32. Subatomic particle having a positive charge; found in nucleus






33. A covalent bond in which one pair of electrons is shared






34. A covalent bond in which one pair of electrons is shared






35. Subatomic particle having a negative charge; not in nucleus but surrounds it






36. Electrons in the outermost energy level; they are involved in bond formation






37. Subatomic particle without a charge; found in nucleus






38. Substance made of two or more elements & one being carbon






39. Atoms that are held together by covalent bonds






40. Occurs when atoms transfer electrons to other atoms






41. Indicates the number and types of atoms in a molecule






42. Interaction of substances that lead to the formation of new substances






43. Atoms that are held together by covalent bonds






44. Substance containing two or more elements chemically combined in a fixed ratio






45. Interaction of substances that lead to the formation of new substances






46. Substance made of two or more elements & none of which is carbon






47. Occurs when atoms share electrons






48. Atoms having the same numbers of protons but different numbers of neutrons






49. Subatomic particle without a charge; found in nucleus






50. Substance made of two or more elements & none of which is carbon