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Which statement describes H2O(ℓ) and H2O2(ℓ)?*
Carbon monoxide and carbon dioxide have*
Chemical properties can be used to*
Compared to the physical and chemical proper- ties of the compound NO2, the compound N2O has*
A sample of a substance has these characteristics: (cid:129) melting point of 984 K (cid:129) hard, brittle solid at room temperature (cid:129) poor conductor of heat and electricity as a solid (cid:129) good conductor of electricity as a liquid or in
an aqueous solution
This sample is classified as*
Which formulas represent one ionic compound and one molecular compound?*
Which terms identify two different categories of compounds?*
Which two terms represent major categories of compounds?*
The table below shows properties of two compounds at standard pressure.
Which statement classifies the two compounds?*
A solid sample of a compound and a liquid sample of the same compound are each tested for electrical conductivity. Which test conclusion indicates that the compound is ionic?*
Base your answers to questions 11 on the information below and on your knowledge of chemistry.
A laboratory technician is given the table below and a sample of one of the three substances listed in the table. The technician makes an aqueous solution with a portion of the sample. When a conductivity tester is lowered into the solution, the lightbulb on the tester glows brightly. Another portion of the sample is placed in a heat-resistant container that is placed in an oven at 450.°C. The sample melts.
State evidence that makes it necessary to use more than one property to identify the substance given to the technician.*