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






2. Occurs when atoms share electrons






3. Subatomic particle without a charge; found in nucleus






4. Indicates the formation of new substances from previous substances






5. Atoms that are held together by covalent bonds






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






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






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






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






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






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






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






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






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






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






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






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






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






19. Occurs when atoms transfer electrons to other atoms






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






21. Subatomic particle without a charge; found in nucleus






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






23. Atoms that are held together by covalent bonds






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






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






26. Occurs when atoms transfer electrons to other atoms






27. Occurs when atoms share electrons






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






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






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






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






32. Anything that occupies space and has mass






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






34. Atoms that have lost or gained electrons






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






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






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






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






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






40. Indicates the formation of new substances from previous substances






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






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






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






44. Anything that occupies space and has mass






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






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






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






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






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






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