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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. Occurs when atoms share electrons






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






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






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






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






6. Subatomic particle without a charge; found in nucleus






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






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






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






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






11. Subatomic particle without a charge; found in nucleus






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






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






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






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






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






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






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






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






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






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






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






23. Anything that occupies space and has mass






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






25. Occurs when atoms transfer electrons to other atoms






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






27. Indicates the formation of new substances from previous substances






28. Indicates the formation of new substances from previous substances






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






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






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






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






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






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






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






36. Occurs when atoms share electrons






37. Atoms that have lost or gained electrons






38. Anything that occupies space and has mass






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






40. Occurs when atoms transfer electrons to other atoms






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






42. Atoms that have lost or gained electrons






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






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






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






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






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






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






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






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