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






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






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






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






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






7. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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






14. Occurs when atoms transfer electrons to other atoms






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






16. Atoms that are held together by covalent bonds






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






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






19. Indicates the formation of new substances from previous substances






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






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






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






23. Atoms that have lost or gained electrons






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






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






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






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






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






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






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






31. Indicates the formation of new substances from previous substances






32. Atoms that have lost or gained electrons






33. Anything that occupies space and has mass






34. Subatomic particle without a charge; found in nucleus






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






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






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






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






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






40. Occurs when atoms share electrons






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






42. Atoms that are held together by covalent bonds






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






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






45. Anything that occupies space and has mass






46. Subatomic particle without a charge; found in nucleus






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






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






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






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