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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 containing two or more elements chemically combined in a fixed ratio






2. Occurs when atoms transfer electrons to other atoms






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






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






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






6. Atoms that are held together by covalent bonds






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






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






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






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






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






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






13. Occurs when atoms share electrons






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






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






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






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






18. Atoms that are held together by covalent bonds






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






20. Occurs when atoms transfer electrons to other atoms






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






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






23. Atoms that have lost or gained electrons






24. Occurs when atoms share electrons






25. Indicates the formation of new substances from previous substances






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






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






28. Indicates the formation of new substances from previous substances






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






30. Anything that occupies space and has mass






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






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






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






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






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






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






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






38. Subatomic particle without a charge; found in nucleus






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






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






41. Subatomic particle without a charge; found in nucleus






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






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






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






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






46. Anything that occupies space and has mass






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






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






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






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