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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. Anything that occupies space and has mass






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






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






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






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






6. Atoms that are held together by covalent bonds






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






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






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






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






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






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






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






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






15. Occurs when atoms transfer electrons to other atoms






16. Anything that occupies space and has mass






17. Subatomic particle without a charge; found in nucleus






18. Atoms that are held together by covalent bonds






19. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






25. Occurs when atoms share electrons






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






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






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






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






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






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






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






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






34. Atoms that have lost or gained electrons






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






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






37. Indicates the formation of new substances from previous substances






38. Atoms that have lost or gained electrons






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






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






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






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






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






44. Occurs when atoms share electrons






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






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






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






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






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






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