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Classify each of the following changes as physica…
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Problem 26 Easy Difficulty

Classify the six underlined properties in the following paragraph as chemical or physical:
Fluorine is a pale yellow gas that reacts with most substances. The free element melts at $-220^{\circ} \mathrm{C}$ and $\mathrm{boilsat}-188^{\circ} \mathrm{C}$ . Finely divided metals bum in fluorine with a bright flame. Nineteen grams of fluorine will react with 1.0 gram of hydrogen.

Answer

It is a chemical reaction of fluorine with hydrogen which form hydrogen fluoride which is a new compound. Thus, it is a chemical property.

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02:33

KC

Kevin C.

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Video Transcript

Let's classify these six underlying properties. In the following paragraph is either chemical or physical properties. The first underlying property is that we're told that flooring is a pale yellow gas. Gas is underlined. This is a physical property. Mhm. As he It is a physical property of the flooring gas. The next underlying phrases reacts with most substances. Mhm. This is talking about the reactivity of the foreign gas. And reactivity is a chemical property. Have a free element melts at negative 220°C melting point is a physical property. Mhm. Yeah, Boils at -188. Yeah, degrees Celsius boiling point is also a physical property. Mhm. And the metal burns in Florina. Yeah. Okay. Just talking about burning here, which is example of a chemical reaction for this is a chemical property. And our last underlying phrase here Is 19 g of flooring. Yeah. Mhm Will react. Yeah, with one grim of hydrogen. Okay, this is a game. Talking about a chemical reaction taking place here. This is a chemical property. Mhm.

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Paul Flowers, Klaus Theopold, Richard Langley, William R. Robinson

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