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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 made of two or more elements & none of which is carbon






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






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






4. Anything that occupies space and has mass






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






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






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






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






9. Atoms that are held together by covalent bonds






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






11. Indicates the formation of new substances from previous substances






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






13. Anything that occupies space and has mass






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






15. Occurs when atoms transfer electrons to other atoms






16. Atoms that have lost or gained electrons






17. Subatomic particle without a charge; found in nucleus






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






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






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






21. Subatomic particle without a charge; found in nucleus






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






23. Occurs when atoms transfer electrons to other atoms






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






25. Occurs when atoms share electrons






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






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






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






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






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






31. Indicates the formation of new substances from previous substances






32. Atoms that have lost or gained electrons






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






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






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






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






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






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






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






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






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






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






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






44. Occurs when atoms share electrons






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






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






47. Atoms that are held together by covalent bonds






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






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






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