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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. Atoms that have lost or gained electrons






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






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






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






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






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






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






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






9. Anything that occupies space and has mass






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






11. Indicates the formation of new substances from previous substances






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






13. Occurs when atoms share electrons






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






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






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






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






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






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






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






21. Indicates the formation of new substances from previous substances






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






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






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






25. Occurs when atoms transfer electrons to other atoms






26. Subatomic particle without a charge; found in nucleus






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






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






29. Atoms that have lost or gained electrons






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






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






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






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






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






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






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






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






38. Atoms that are held together by covalent bonds






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






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






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






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






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






44. Occurs when atoms share electrons






45. Atoms that are held together by covalent bonds






46. Occurs when atoms transfer electrons to other atoms






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






48. Anything that occupies space and has mass






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






50. Subatomic particle without a charge; found in nucleus