For questions 3 to 5. Refer to the information below. You may also refer to the periodic table. Write the symbols only. Substance symbol Temperature at which the Substance boils (°C) Temperature at which the substance melts (°C) 850 1083 1540 -270 650 1490 2600 2900 -269 1110 -37 71 Calcium (Ca) Copper (Cu) Iron (Fe) Helium (He) Magnesium (Mg) Nitrogen trichloride (NCIS) Nitrogen monoxide (NO) Sodium carbonate (Na2CO3) Silicon oxide (SiO2) -163 -152 858 890 1610 2230

5. Which substance is liquid at -37°C?



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