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






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






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






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






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






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






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






8. Atoms that are held together by covalent bonds






9. Atoms that are held together by covalent bonds






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






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






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






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






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






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






16. Occurs when atoms transfer electrons to other atoms






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






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






19. Atoms that have lost or gained electrons






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






21. Anything that occupies space and has mass






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






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






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






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






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






27. Anything that occupies space and has mass






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






29. Subatomic particle without a charge; found in nucleus






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






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






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






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






34. Atoms that have lost or gained electrons






35. Indicates the formation of new substances from previous substances






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






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






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






39. Occurs when atoms share electrons






40. Occurs when atoms transfer electrons to other atoms






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






42. Subatomic particle without a charge; found in nucleus






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






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






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






46. Indicates the formation of new substances from previous substances






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






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






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






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