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






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






3. Subatomic particle without a charge; found in nucleus






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






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






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






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






8. Occurs when atoms transfer electrons to other atoms






9. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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






16. Atoms that are held together by covalent bonds






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






18. Occurs when atoms share electrons






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






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






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






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






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






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






25. Indicates the formation of new substances from previous substances






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






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






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






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






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






31. Subatomic particle without a charge; found in nucleus






32. Atoms that have lost or gained electrons






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






34. Indicates the formation of new substances from previous substances






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






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






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






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






39. Anything that occupies space and has mass






40. Atoms that are held together by covalent bonds






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






42. Occurs when atoms share electrons






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






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






45. Anything that occupies space and has mass






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






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






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






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






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