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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. Atoms that have lost or gained electrons






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






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






5. Occurs when atoms share electrons






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






7. Subatomic particle without a charge; found in nucleus






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






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






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






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






12. Anything that occupies space and has mass






13. Occurs when atoms transfer electrons to other atoms






14. Atoms that are held together by covalent bonds






15. Indicates the formation of new substances from previous substances






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






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






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






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






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






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






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






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






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






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






26. Indicates the formation of new substances from previous substances






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






28. Occurs when atoms share electrons






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






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






31. Subatomic particle without a charge; found in nucleus






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






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






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






35. Anything that occupies space and has mass






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






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






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






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






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






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






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






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






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






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






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






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






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






49. Atoms that have lost or gained electrons






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