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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 containing two or more elements chemically combined in a fixed ratio






2. Occurs when atoms transfer electrons to other atoms






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






4. Atoms that are held together by covalent bonds






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






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. Indicates the formation of new substances from previous substances






9. Occurs when atoms share electrons






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






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






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






15. Atoms that have lost or gained electrons






16. Anything that occupies space and has mass






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






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






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






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






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






22. Atoms that are held together by covalent bonds






23. Anything that occupies space and has mass






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






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






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






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






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






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






30. Subatomic particle without a charge; found in nucleus






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






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






33. Atoms that have lost or gained electrons






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






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






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






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






38. Indicates the formation of new substances from previous substances






39. Occurs when atoms transfer electrons to other atoms






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






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






42. Subatomic particle without a charge; found in nucleus






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






44. Occurs when atoms share electrons






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






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






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






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






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






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