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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. Indicates the number and types of atoms in a molecule






2. Anything that occupies space and has mass






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






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






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






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






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






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






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






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






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






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






13. Occurs when atoms share electrons






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






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






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






17. Atoms that have lost or gained electrons






18. Atoms that have lost or gained electrons






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






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






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






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






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






24. Subatomic particle without a charge; found in nucleus






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






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






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






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






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






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






33. Subatomic particle without a charge; found in nucleus






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






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






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






37. Occurs when atoms transfer electrons to other atoms






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






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






40. Indicates the formation of new substances from previous substances






41. Occurs when atoms share electrons






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






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






44. Atoms that are held together by covalent bonds






45. Occurs when atoms transfer electrons to other atoms






46. Atoms that are held together by covalent bonds






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






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






49. Indicates the formation of new substances from previous substances






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