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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 negative charge; not in nucleus but surrounds it






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






3. Anything that occupies space and has mass






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






5. Atoms that are held together by covalent bonds






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






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






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






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






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






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






12. Subatomic particle without a charge; found in nucleus






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






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






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






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






17. Atoms that have lost or gained electrons






18. Subatomic particle without a charge; found in nucleus






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






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






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






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






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






24. Indicates the formation of new substances from previous substances






25. Occurs when atoms share electrons






26. Atoms that have lost or gained electrons






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






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






29. Atoms that are held together by covalent bonds






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






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






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






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






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






35. Occurs when atoms transfer electrons to other atoms






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






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






38. Anything that occupies space and has mass






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






40. Occurs when atoms transfer electrons to other atoms






41. Occurs when atoms share electrons






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






43. Indicates the formation of new substances from previous substances






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






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






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






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






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






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






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