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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. Subatomic particle having a positive charge; found in nucleus






2. Atoms that are held together by covalent bonds






3. Indicates the formation of new substances from previous substances






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






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






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






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






8. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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






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






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






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






18. Anything that occupies space and has mass






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






20. Subatomic particle without a charge; found in nucleus






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






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






23. Anything that occupies space and has mass






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






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






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






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






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






29. Atoms that are held together by covalent bonds






30. Indicates the formation of new substances from previous substances






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






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






33. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






39. Atoms that have lost or gained electrons






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






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






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






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






44. Occurs when atoms share electrons






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






46. Atoms that have lost or gained electrons






47. Occurs when atoms share electrons






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






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






50. Subatomic particle without a charge; found in nucleus