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






2. Atoms that are held together by covalent bonds






3. Occurs when atoms share electrons






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






5. Anything that occupies space and has mass






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






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






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






9. Indicates the formation of new substances from previous substances






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






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






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






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






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






15. Subatomic particle without a charge; found in nucleus






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






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






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






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






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






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






22. Atoms that have lost or gained electrons






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






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






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






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






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






28. Atoms that are held together by covalent bonds






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






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






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






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






33. Occurs when atoms share electrons






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






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






36. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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






43. Occurs when atoms transfer electrons to other atoms






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






45. Indicates the formation of new substances from previous substances






46. Anything that occupies space and has mass






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






48. Atoms that have lost or gained electrons






49. Subatomic particle without a charge; found in nucleus






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