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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. Subatomic particle without a charge; found in nucleus






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






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






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






5. Occurs when atoms share electrons






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






7. Occurs when atoms transfer electrons to other atoms






8. Occurs when atoms transfer electrons to other atoms






9. Indicates the formation of new substances from previous substances






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






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






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






13. Occurs when atoms share electrons






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






15. Anything that occupies space and has mass






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






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






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






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






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






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






22. Atoms that are held together by covalent bonds






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






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






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






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






27. Indicates the formation of new substances from previous substances






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






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






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






31. Atoms that have lost or gained electrons






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






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






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






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






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






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






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






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






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






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






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






43. Atoms that have lost or gained electrons






44. Subatomic particle without a charge; found in nucleus






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






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






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






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






49. Atoms that are held together by covalent bonds






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