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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 & one being carbon






2. Anything that occupies space and has mass






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






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






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






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






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






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






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






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






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






12. Atoms that have lost or gained electrons






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






14. Indicates the formation of new substances from previous substances






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






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






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






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






19. Occurs when atoms share electrons






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






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






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






23. Indicates the formation of new substances from previous substances






24. Subatomic particle without a charge; found in nucleus






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






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






27. Occurs when atoms transfer electrons to other atoms






28. Anything that occupies space and has mass






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






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






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






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






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






34. Subatomic particle without a charge; found in nucleus






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






36. Atoms that are held together by covalent bonds






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






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






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






40. Atoms that have lost or gained electrons






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






42. Atoms that are held together by covalent bonds






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






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






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






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






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






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






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






50. Occurs when atoms share electrons