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






3. Anything that occupies space and has mass






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






5. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






11. Atoms that are held together by covalent bonds






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






13. Atoms that have lost or gained electrons






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






15. Indicates the formation of new substances from previous substances






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






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






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






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






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






21. Occurs when atoms share electrons






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






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






24. Subatomic particle without a charge; found in nucleus






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






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






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






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






29. Anything that occupies space and has mass






30. Subatomic particle without a charge; found in nucleus






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






32. Occurs when atoms transfer electrons to other atoms






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






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






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






36. Atoms that have lost or gained electrons






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






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






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






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






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






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






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






44. Atoms that are held together by covalent bonds






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






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






47. Occurs when atoms share electrons






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






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






50. Indicates the formation of new substances from previous substances