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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 having the same numbers of protons but different numbers of neutrons






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






3. Indicates the formation of new substances from previous substances






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






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






6. Atoms that have lost or gained electrons






7. Occurs when atoms share electrons






8. Subatomic particle without a charge; found in nucleus






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






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






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






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






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






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






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






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






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






18. Atoms that are held together by covalent bonds






19. Atoms that are held together by covalent bonds






20. Anything that occupies space and has mass






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






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






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






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






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






26. Anything that occupies space and has mass






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






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






29. Indicates the formation of new substances from previous substances






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






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






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






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






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






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






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






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






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






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






40. Atoms that have lost or gained electrons






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






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






43. Subatomic particle without a charge; found in nucleus






44. Occurs when atoms transfer electrons to other atoms






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






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






47. Occurs when atoms share electrons






48. Occurs when atoms transfer electrons to other atoms






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






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