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






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






4. Atoms that have lost or gained electrons






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






6. Anything that occupies space and has mass






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






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






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






10. Indicates the formation of new substances from previous substances






11. Occurs when atoms share electrons






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






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






14. Subatomic particle without a charge; found in nucleus






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






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






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






18. Indicates the formation of new substances from previous substances






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






20. Subatomic particle without a charge; found in nucleus






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






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






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






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






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






26. Anything that occupies space and has mass






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






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






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






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






31. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






37. Occurs when atoms share electrons






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






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






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






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






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






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






44. Atoms that are held together by covalent bonds






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






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






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






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






49. Atoms that have lost or gained electrons






50. Occurs when atoms transfer electrons to other atoms