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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. Indicates the formation of new substances from previous substances






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






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






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






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






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






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






8. Occurs when atoms share electrons






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






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






11. Occurs when atoms transfer electrons to other atoms






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






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






14. Atoms that are held together by covalent bonds






15. Atoms that are held together by covalent bonds






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






17. Anything that occupies space and has mass






18. Atoms that have lost or gained electrons






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






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






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






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






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






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






25. Subatomic particle without a charge; found in nucleus






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






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






28. Atoms that have lost or gained electrons






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






30. Subatomic particle without a charge; found in nucleus






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






32. Anything that occupies space and has mass






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






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






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






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






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






38. Indicates the formation of new substances from previous substances






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






40. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






46. Occurs when atoms share electrons






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






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






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






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