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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. Subatomic particle without a charge; found in nucleus






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






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






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






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






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






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






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






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






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






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






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






13. Atoms that are held together by covalent bonds






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






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






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






17. Occurs when atoms share electrons






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






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






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






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






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






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






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






25. Anything that occupies space and has mass






26. Indicates the formation of new substances from previous substances






27. Atoms that have lost or gained electrons






28. Subatomic particle without a charge; found in nucleus






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






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






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






32. Atoms that are held together by covalent bonds






33. Occurs when atoms transfer electrons to other atoms






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






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






36. Occurs when atoms transfer electrons to other atoms






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






38. Anything that occupies space and has mass






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






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






41. Atoms that have lost or gained electrons






42. Occurs when atoms share electrons






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






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






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






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






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






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






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






50. Indicates the formation of new substances from previous substances