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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. Indicates the formation of new substances from previous substances






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






3. Occurs when atoms transfer electrons to other atoms






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






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






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






7. Subatomic particle without a charge; found in nucleus






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






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






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






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






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






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






14. Anything that occupies space and has mass






15. Atoms that have lost or gained electrons






16. Indicates the formation of new substances from previous substances






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






18. Anything that occupies space and has mass






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






20. Atoms that are held together by covalent bonds






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






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






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






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






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






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






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






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






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






30. Occurs when atoms share electrons






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






32. Subatomic particle without a charge; found in nucleus






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






34. Occurs when atoms transfer electrons to other atoms






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






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






37. Atoms that have lost or gained electrons






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






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






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






41. Atoms that are held together by covalent bonds






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






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






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






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






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






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






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






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






50. Occurs when atoms share electrons