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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 made of two or more elements & one being carbon






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






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






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






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






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






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






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






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






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






11. Anything that occupies space and has mass






12. Indicates the formation of new substances from previous substances






13. Atoms that are held together by covalent bonds






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






15. Indicates the formation of new substances from previous substances






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






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






18. Occurs when atoms share electrons






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






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






21. Atoms that have lost or gained electrons






22. Subatomic particle without a charge; found in nucleus






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






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






25. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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






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






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






34. Occurs when atoms transfer electrons to other atoms






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






36. Atoms that have lost or gained electrons






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






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






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






40. Atoms that are held together by covalent bonds






41. Subatomic particle without a charge; found in nucleus






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






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






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






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






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






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






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






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






50. Anything that occupies space and has mass