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






3. Anything that occupies space and has mass






4. Occurs when atoms share electrons






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






6. Indicates the formation of new substances from previous substances






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






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






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






10. Occurs when atoms share electrons






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






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






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






14. Atoms that have lost or gained electrons






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






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






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






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






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






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






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






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






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






24. Atoms that are held together by covalent bonds






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






26. Atoms that are held together by covalent bonds






27. Atoms that have lost or gained electrons






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






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






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






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






34. Subatomic particle without a charge; found in nucleus






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






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






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






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






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






40. Indicates the formation of new substances from previous substances






41. Occurs when atoms transfer electrons to other atoms






42. Occurs when atoms transfer electrons to other atoms






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






44. Subatomic particle without a charge; found in nucleus






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






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






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






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






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






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