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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. Occurs when atoms share electrons






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






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






5. Subatomic particle without a charge; found in nucleus






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






7. Occurs when atoms transfer electrons to other atoms






8. Occurs when atoms transfer electrons to other atoms






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






10. Anything that occupies space and has mass






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






12. Indicates the formation of new substances from previous substances






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






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






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






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






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






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






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






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






21. Atoms that are held together by covalent bonds






22. Atoms that have lost or gained electrons






23. Atoms that have lost or gained electrons






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






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






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






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






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






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






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






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






32. Indicates the formation of new substances from previous substances






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






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






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






36. Subatomic particle without a charge; found in nucleus






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






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






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






40. Atoms that are held together by covalent bonds






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






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






43. Anything that occupies space and has mass






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






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






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






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






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






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






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