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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 transfer electrons to other atoms






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






3. Anything that occupies space and has mass






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






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






6. Atoms that have lost or gained electrons






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






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






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






10. Anything that occupies space and has mass






11. Indicates the formation of new substances from previous substances






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






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






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






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






16. Atoms that are held together by covalent bonds






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






18. Atoms that are held together by covalent bonds






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






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






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






22. Occurs when atoms transfer electrons to other atoms






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






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






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






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






27. Occurs when atoms share electrons






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






29. Atoms that have lost or gained electrons






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






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






32. Occurs when atoms share electrons






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






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






35. Indicates the formation of new substances from previous substances






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






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






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






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






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






41. Subatomic particle without a charge; found in nucleus






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






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






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






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






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






47. Subatomic particle without a charge; found in nucleus






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






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






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