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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 made of two or more elements & one being carbon






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






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






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






5. Atoms that are held together by covalent bonds






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






7. Occurs when atoms share electrons






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






9. Occurs when atoms transfer electrons to other atoms






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






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






12. Atoms that have lost or gained electrons






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






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






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






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






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






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






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






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






21. Atoms that are held together by covalent bonds






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






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






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






25. Indicates the formation of new substances from previous substances






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






27. Subatomic particle without a charge; found in nucleus






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






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






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






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






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






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






34. Occurs when atoms share electrons






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






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






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






38. Occurs when atoms transfer electrons to other atoms






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






40. Anything that occupies space and has mass






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






42. Anything that occupies space and has mass






43. Subatomic particle without a charge; found in nucleus






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






45. Atoms that have lost or gained electrons






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






47. Indicates the formation of new substances from previous substances






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






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






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