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






2. Subatomic particle without a charge; found in nucleus






3. Occurs when atoms share electrons






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






5. Indicates the formation of new substances from previous substances






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






7. Subatomic particle without a charge; found in nucleus






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






9. Atoms that are held together by covalent bonds






10. Atoms that are held together by covalent bonds






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






12. Indicates the formation of new substances from previous substances






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






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






15. Atoms that have lost or gained electrons






16. Occurs when atoms share electrons






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






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






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






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






21. Anything that occupies space and has mass






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






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






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






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






26. Occurs when atoms transfer electrons to other atoms






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






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






29. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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






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






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






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






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






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






41. Atoms that have lost or gained electrons






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






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






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






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






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






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






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






49. Anything that occupies space and has mass






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