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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 having a negative charge; not in nucleus but surrounds it






3. Anything that occupies space and has mass






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






5. Indicates the formation of new substances from previous substances






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






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






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






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






10. Atoms that have lost or gained electrons






11. Occurs when atoms share electrons






12. Atoms that are held together by covalent bonds






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






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






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






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






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






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






19. Indicates the formation of new substances from previous substances






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






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






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






23. Atoms that are held together by covalent bonds






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






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






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






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






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






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






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






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






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






35. Atoms that have lost or gained electrons






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






37. Occurs when atoms transfer electrons to other atoms






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






39. Occurs when atoms transfer electrons to other atoms






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






41. Subatomic particle without a charge; found in nucleus






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






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






44. Anything that occupies space and has mass






45. Occurs when atoms share electrons






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






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






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






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






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