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






3. Indicates the formation of new substances from previous substances






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






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






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






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






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






9. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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






16. Occurs when atoms share electrons






17. Atoms that have lost or gained electrons






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






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






20. Occurs when atoms transfer electrons to other atoms






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






22. Atoms that are held together by covalent bonds






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






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






25. Atoms that are held together by covalent bonds






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






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






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






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






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






31. Atoms that have lost or gained electrons






32. Anything that occupies space and has mass






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






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






35. Subatomic particle without a charge; found in nucleus






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






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






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






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






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






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






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






43. Indicates the formation of new substances from previous substances






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






45. Subatomic particle without a charge; found in nucleus






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






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






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






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






50. Anything that occupies space and has mass