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






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






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






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






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






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






9. Anything that occupies space and has mass






10. Occurs when atoms share electrons






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






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






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






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






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






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






17. Subatomic particle without a charge; found in nucleus






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






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






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






21. Atoms that are held together by covalent bonds






22. Occurs when atoms share electrons






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






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






25. Indicates the formation of new substances from previous substances






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






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






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






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






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






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






32. Indicates the formation of new substances from previous substances






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






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






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






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






37. Anything that occupies space and has mass






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






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






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






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






42. Occurs when atoms transfer electrons to other atoms






43. Atoms that are held together by covalent bonds






44. Occurs when atoms transfer electrons to other atoms






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






46. Subatomic particle without a charge; found in nucleus






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






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






49. Atoms that have lost or gained electrons






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