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






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






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






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






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






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






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. Indicates the number and types of atoms in a molecule






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






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






13. Atoms that have lost or gained electrons






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






15. Subatomic particle without a charge; found in nucleus






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






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






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






19. Anything that occupies space and has mass






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






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






22. Occurs when atoms share electrons






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






24. Indicates the formation of new substances from previous substances






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






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






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






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






29. Indicates the formation of new substances from previous substances






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






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






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






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






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






35. Atoms that have lost or gained electrons






36. Occurs when atoms transfer electrons to other atoms






37. Subatomic particle without a charge; found in nucleus






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






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






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






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






42. Anything that occupies space and has mass






43. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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






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