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






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






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






4. Atoms that have lost or gained electrons






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






6. Occurs when atoms transfer electrons to other atoms






7. Atoms that have lost or gained electrons






8. Occurs when atoms transfer electrons to other atoms






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






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






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






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






13. Anything that occupies space and has mass






14. Occurs when atoms share electrons






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






16. Subatomic particle without a charge; found in nucleus






17. Indicates the formation of new substances from previous substances






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






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






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






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






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






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






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






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






26. Subatomic particle without a charge; found in nucleus






27. Indicates the formation of new substances from previous substances






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






29. Anything that occupies space and has mass






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






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






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






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






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






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






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






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






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






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






40. Atoms that are held together by covalent bonds






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






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






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






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






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






46. Atoms that are held together by covalent bonds






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






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






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






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