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






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






3. Subatomic particle without a charge; found in nucleus






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






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






6. Atoms that are held together by covalent bonds






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






8. Atoms that have lost or gained electrons






9. Occurs when atoms share electrons






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






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






12. Atoms that are held together by covalent bonds






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






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






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






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






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






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






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






20. Anything that occupies space and has mass






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






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






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






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






25. Subatomic particle without a charge; found in nucleus






26. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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






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






34. Anything that occupies space and has mass






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






36. Occurs when atoms transfer electrons to other atoms






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






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






39. Indicates the formation of new substances from previous substances






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






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






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






43. Atoms that have lost or gained electrons






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






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






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






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






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






49. Indicates the formation of new substances from previous substances






50. Occurs when atoms share electrons