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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 without a charge; found in nucleus






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






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






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






5. Atoms that have lost or gained electrons






6. Anything that occupies space and has mass






7. Indicates the formation of new substances from previous substances






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






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






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






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






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






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






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






15. Atoms that have lost or gained electrons






16. Atoms that are held together by covalent bonds






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






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






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






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






21. Occurs when atoms transfer electrons to other atoms






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






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






24. Indicates the formation of new substances from previous substances






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






26. Occurs when atoms share electrons






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






28. Occurs when atoms share electrons






29. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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






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






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






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






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






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






41. Atoms that are held together by covalent bonds






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






43. Subatomic particle without a charge; found in nucleus






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






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






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






47. Anything that occupies space and has mass






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






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






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