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






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






3. Anything that occupies space and has mass






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






5. Atoms that have lost or gained electrons






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






7. Indicates the formation of new substances from previous substances






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






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






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






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






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






13. Atoms that have lost or gained electrons






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






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






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






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






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






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






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






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






22. Anything that occupies space and has mass






23. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






29. Atoms that are held together by covalent bonds






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






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






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






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






34. Subatomic particle without a charge; found in nucleus






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






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






37. Indicates the formation of new substances from previous substances






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






39. Occurs when atoms share electrons






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






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






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






43. Subatomic particle without a charge; found in nucleus






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






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






46. Occurs when atoms transfer electrons to other atoms






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






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






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






50. Atoms that are held together by covalent bonds