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Basic Chemistry

Subjects : science, chemistry
Instructions:
  • Answer 50 questions in 20 minutes. 1 minute extra for reading the instructions.
  • 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. Subatomic particle having a negative charge; not in nucleus but surrounds it






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






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






5. Occurs when atoms transfer electrons to other atoms






6. Subatomic particle without a charge; found in nucleus






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






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






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






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






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






12. Atoms that have lost or gained electrons






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






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






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






16. Anything that occupies space and has mass






17. Atoms that have lost or gained electrons






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






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






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






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






22. Indicates the formation of new substances from previous substances






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






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






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






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






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






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






29. Atoms that are held together by covalent bonds






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






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






32. Anything that occupies space and has mass






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






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






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






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






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






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






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






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






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






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






43. Occurs when atoms share electrons






44. Subatomic particle without a charge; found in nucleus






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






46. Atoms that are held together by covalent bonds






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






48. Occurs when atoms transfer electrons to other atoms






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






50. Indicates the formation of new substances from previous substances