Classify the type of matter of each of the three components studied in this lab A. Iron filings (Fe):
B. Salt (NaCI):
C. Sand (SiO2):

Flourine is found to undergo 10% radioactivity decay in 366 minutes determine its halflife

Which is a chemical property of iron? a. it forms iron oxide (rust) when exposed to moisture and air. b. it is a gray–black metal that is hard to the touch. c. it has a melting point of 2795°f (1536°c). d. it is a good conductor of heat

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