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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. Occurs when atoms share electrons






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






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






5. Anything that occupies space and has mass






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






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






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






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






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






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






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






13. Indicates the formation of new substances from previous substances






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






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






16. Atoms that are held together by covalent bonds






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






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






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






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






21. Atoms that have lost or gained electrons






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






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






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






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






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






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






28. Atoms that have lost or gained electrons






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






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






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






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






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 share electrons






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






37. Occurs when atoms transfer electrons to other atoms






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






39. Subatomic particle without a charge; found in nucleus






40. Occurs when atoms transfer electrons to other atoms






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






42. Anything that occupies space and has mass






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






44. Subatomic particle without a charge; found in nucleus






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






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






47. Atoms that are held together by covalent bonds






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






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






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