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






2. Subatomic particle without a charge; found in nucleus






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






4. Indicates the formation of new substances from previous substances






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






6. Anything that occupies space and has mass






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






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






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






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






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






12. Occurs when atoms share electrons






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






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






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






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






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






18. Occurs when atoms transfer electrons to other atoms






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






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






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






22. Atoms that are held together by covalent bonds






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






24. Subatomic particle without a charge; found in nucleus






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






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






27. Occurs when atoms share electrons






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






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






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






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






32. Atoms that have lost or gained electrons






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






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






35. Occurs when atoms transfer electrons to other atoms






36. Indicates the formation of new substances from previous substances






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






38. Atoms that are held together by covalent bonds






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






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






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






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






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






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






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






46. Atoms that have lost or gained electrons






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






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






49. Anything that occupies space and has mass






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