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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. Occurs when atoms share electrons






2. Anything that occupies space and has mass






3. Indicates the formation of new substances from previous substances






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






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






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






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






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






9. Atoms that have lost or gained electrons






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






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






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






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






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






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






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






17. Subatomic particle without a charge; found in nucleus






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






19. Occurs when atoms transfer electrons to other atoms






20. Subatomic particle without a charge; found in nucleus






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






22. Atoms that are held together by covalent bonds






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






24. Indicates the formation of new substances from previous substances






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






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






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






28. Atoms that are held together by covalent bonds






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






30. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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






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






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






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






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






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






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






43. Anything that occupies space and has mass






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






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






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






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






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






49. Occurs when atoms share electrons






50. Atoms that have lost or gained electrons