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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. Anything that occupies space and has mass






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






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






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






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






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






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






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






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






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






12. Subatomic particle without a charge; found in nucleus






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






14. Atoms that have lost or gained electrons






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






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






17. Indicates the formation of new substances from previous substances






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






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






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






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






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






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






24. Occurs when atoms share electrons






25. Occurs when atoms transfer electrons to other atoms






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






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






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






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






30. Anything that occupies space and has mass






31. Occurs when atoms transfer electrons to other atoms






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






33. Atoms that are held together by covalent bonds






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






35. Atoms that are held together by covalent bonds






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






37. Indicates the formation of new substances from previous substances






38. Subatomic particle without a charge; found in nucleus






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






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






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






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






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






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






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






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






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






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






49. Occurs when atoms share electrons






50. Atoms that have lost or gained electrons