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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 having a positive charge; found in nucleus






2. Indicates the formation of new substances from previous substances






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






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






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






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






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






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






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






10. Indicates the formation of new substances from previous substances






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






12. Atoms that have lost or gained electrons






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






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






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






16. Subatomic particle without a charge; found in nucleus






17. Subatomic particle without a charge; found in nucleus






18. Anything that occupies space and has mass






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






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






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






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






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






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






25. Anything that occupies space and has mass






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






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






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






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






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






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






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






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






34. Atoms that are held together by covalent bonds






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






36. Occurs when atoms share electrons






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






38. Atoms that are held together by covalent bonds






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






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






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






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






43. Occurs when atoms transfer electrons to other atoms






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






45. Occurs when atoms share electrons






46. Atoms that have lost or gained electrons






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






48. Occurs when atoms transfer electrons to other atoms






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






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