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Cards In This Set
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Chemistry is the study of...
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Matter & the transformation of matter
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Applied research:
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Developing basic research; determining the lightest and strongest metal to be used for an airplane wing.
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50mL small BBs + 50 mL large BBs = 90 mL of BBs
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Many of the smaller BBs are able to fit within the pockets of space that were empty within the 50 mL of large BBs
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Scientific hypothesis is:
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Testable assumption used to explain an observation
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Which of the following represents the largest quantity of mass?
a. 100 kg b. 100,000,000,000 micrograms c.100,000,000 milligrams d. 100,000 g e. All the masses are the same |
All the masses are the same
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Which has stronger attractions among its submicroscopic particles: a solid at 25 C or a gas at 25 C?
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The attractions among the submicroscopic particles of the solid must be stronger than the attractions among the particles of the gas.
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Which of the following statements best describes an element?
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A material consisting of only one type of atom
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Which of the following would be considered a physical property?
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Density
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How many atoms of O are in H3OClO4?
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5 atoms
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If you filter sea water to remove all of the particles you would be left with a clear...
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Homogeneous mixture called a solution
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Which of the following statements from Dalton's atomic theory would best describe the following observation:
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Atoms can be neither created nor destroyed in a chemical reaction.
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Which of the following statements best summarizes the Law of Definite Proportions?
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The mass ratio of the elements in a compound will be the same regardless of how the compound was made.
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The following statement describes which subatomic particle best? It has a relatively large mass
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A proton and neutron (P&N)
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If the particles of a cathode ray had a greater electric charge, the ray passing through a magnetic field would bend:
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More because of a greater electromagnetic attraction
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What does the following element description 186O?
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An oxygen atom with 6 protons and 12 neutrons
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