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






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






3. Indicates the formation of new substances from previous substances






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






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






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






7. Anything that occupies space and has mass






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






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






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






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






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






13. Atoms that have lost or gained electrons






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






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






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






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






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






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






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






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






22. Atoms that have lost or gained electrons






23. Occurs when atoms share electrons






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






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






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






27. Occurs when atoms transfer electrons to other atoms






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






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






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






31. Subatomic particle without a charge; found in nucleus






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






33. Anything that occupies space and has mass






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






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






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






37. Occurs when atoms transfer electrons to other atoms






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






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






40. Indicates the formation of new substances from previous substances






41. Subatomic particle without a charge; found in nucleus






42. Atoms that are held together by covalent bonds






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






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






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






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






47. Occurs when atoms share electrons






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






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






50. Atoms that are held together by covalent bonds