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






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






3. Atoms that are held together by covalent bonds






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






5. Indicates the formation of new substances from previous substances






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






7. Anything that occupies space and has mass






8. Atoms that are held together by covalent bonds






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






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






11. Occurs when atoms share electrons






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






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






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






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






16. Subatomic particle without a charge; found in nucleus






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






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






19. Indicates the formation of new substances from previous substances






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






21. Atoms that have lost or gained electrons






22. Occurs when atoms share electrons






23. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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






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






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






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






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






34. Subatomic particle without a charge; found in nucleus






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






36. Anything that occupies space and has mass






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






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






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






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






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






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






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






44. Occurs when atoms transfer electrons to other atoms






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






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






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






48. Atoms that have lost or gained electrons






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






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






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