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






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






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






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






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






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






8. Atoms that are held together by covalent bonds






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






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






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






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






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






14. Subatomic particle without a charge; found in nucleus






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






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






17. Occurs when atoms share electrons






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






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






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






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






22. Atoms that have lost or gained electrons






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






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






25. Atoms that are held together by covalent bonds






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






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






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






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






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






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






32. Occurs when atoms share electrons






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






34. Anything that occupies space and has mass






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






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






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






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






39. Anything that occupies space and has mass






40. Subatomic particle without a charge; found in nucleus






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






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






43. Occurs when atoms transfer electrons to other atoms






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






45. Atoms that have lost or gained electrons






46. Indicates the formation of new substances from previous substances






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






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






49. Indicates the formation of new substances from previous substances






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