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






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






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






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






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






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






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






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






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






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






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






12. Anything that occupies space and has mass






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






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






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






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






17. Atoms that have lost or gained electrons






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






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






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






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






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






23. Atoms that have lost or gained electrons






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






25. Occurs when atoms transfer electrons to other atoms






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






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






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






29. Anything that occupies space and has mass






30. Subatomic particle without a charge; found in nucleus






31. Atoms that are held together by covalent bonds






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






33. Occurs when atoms share electrons






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






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






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






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






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






39. Indicates the formation of new substances from previous substances






40. Atoms that are held together by covalent bonds






41. Indicates the formation of new substances from previous substances






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






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






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






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






46. Occurs when atoms share electrons






47. Occurs when atoms transfer electrons to other atoms






48. Subatomic particle without a charge; found in nucleus






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






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