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






4. Atoms that are held together by covalent bonds






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






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






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






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






9. Anything that occupies space and has mass






10. Occurs when atoms transfer electrons to other atoms






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






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






13. Occurs when atoms share electrons






14. Atoms that are held together by covalent bonds






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






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






17. Indicates the formation of new substances from previous substances






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






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






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






21. Anything that occupies space and has mass






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






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






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






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






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






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






28. Occurs when atoms share electrons






29. Subatomic particle without a charge; found in nucleus






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






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






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






35. Occurs when atoms transfer electrons to other atoms






36. Atoms that have lost or gained electrons






37. Subatomic particle without a charge; found in nucleus






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






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






40. Indicates the formation of new substances from previous substances






41. Atoms that have lost or gained electrons






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






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






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






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






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






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






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