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






3. Atoms that are held together by covalent bonds






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






5. Indicates the formation of new substances from previous substances






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






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






8. Occurs when atoms transfer electrons to other atoms






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






10. Anything that occupies space and has mass






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






12. Indicates the formation of new substances from previous substances






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






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






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






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






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






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






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






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






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






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






23. Anything that occupies space and has mass






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






25. Subatomic particle without a charge; found in nucleus






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






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






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






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






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






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






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






33. Occurs when atoms share electrons






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






35. Atoms that have lost or gained electrons






36. Atoms that are held together by covalent bonds






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






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






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






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






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






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






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






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






45. Atoms that have lost or gained electrons






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






47. Occurs when atoms transfer electrons to other atoms






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






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






50. Subatomic particle without a charge; found in nucleus