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






3. Atoms that have lost or gained electrons






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






5. Subatomic particle without a charge; found in nucleus






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






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






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






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






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






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






12. Indicates the formation of new substances from previous substances






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






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






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






16. Anything that occupies space and has mass






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






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






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






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






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






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






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






24. Occurs when atoms share electrons






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






26. Atoms that are held together by covalent bonds






27. Occurs when atoms transfer electrons to other atoms






28. Subatomic particle without a charge; found in nucleus






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






30. Indicates the formation of new substances from previous substances






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






32. Atoms that have lost or gained electrons






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






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






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






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






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






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






39. Atoms that are held together by covalent bonds






40. Occurs when atoms transfer electrons to other atoms






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






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






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






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






45. Anything that occupies space and has mass






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






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






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






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






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