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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. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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






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






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






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






11. Atoms that are held together by covalent bonds






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






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






14. Indicates the formation of new substances from previous substances






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






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






17. Occurs when atoms share electrons






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






19. Occurs when atoms transfer electrons to other atoms






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






21. Indicates the formation of new substances from previous substances






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






23. Occurs when atoms share electrons






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






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






26. Atoms that have lost or gained electrons






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






28. Subatomic particle without a charge; found in nucleus






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






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






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






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






33. Atoms that have lost or gained electrons






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






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






36. Anything that occupies space and has mass






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






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






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






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






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






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






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






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






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






46. Anything that occupies space and has mass






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






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






49. Subatomic particle without a charge; found in nucleus






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