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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. Occurs when atoms transfer electrons to other atoms






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






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






4. Subatomic particle without a charge; found in nucleus






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






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






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






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






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






10. Occurs when atoms share electrons






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






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






13. Atoms that are held together by covalent bonds






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






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






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






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






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






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






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






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






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






23. Anything that occupies space and has mass






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






25. Subatomic particle without a charge; found in nucleus






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






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






28. Occurs when atoms transfer electrons to other atoms






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






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






31. Occurs when atoms share electrons






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






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






34. Indicates the formation of new substances from previous substances






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






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






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






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






39. Atoms that have lost or gained electrons






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






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






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






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






44. Atoms that are held together by covalent bonds






45. Indicates the formation of new substances from previous substances






46. Anything that occupies space and has mass






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






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






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






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