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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 positive charge; found in nucleus






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






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






5. Occurs when atoms transfer electrons to other atoms






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






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






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






9. Atoms that have lost or gained electrons






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






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






12. Atoms that have lost or gained electrons






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






14. Subatomic particle without a charge; found in nucleus






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






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






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






18. Indicates the formation of new substances from previous substances






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






20. Occurs when atoms transfer electrons to other atoms






21. Atoms that are held together by covalent bonds






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






23. Occurs when atoms share electrons






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






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






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






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






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






29. Anything that occupies space and has mass






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






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






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






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






34. Indicates the formation of new substances from previous substances






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






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






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






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






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






40. Atoms that are held together by covalent bonds






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






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






43. Subatomic particle without a charge; found in nucleus






44. Anything that occupies space and has mass






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






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






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






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






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






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