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Yuliya22 [10]
2 years ago
6

esulfur burns easily .Iron is attracted by magnets .the mineral made by sulfur and iron ,but it does not burn and it is not attr

acted by magnets .is it a mixture ?why ? and why not ?
Chemistry
1 answer:
vladimir2022 [97]2 years ago
3 0
The mineral is Iron Sulphide. It is not a mixture, but a compound. A mixture is when two substances are together, but not chemically bonded. For example, if I add food colouring to water, I have made a mixture because the food colouring has not chemically bonded to the water. If I react Iron with Suphur, the resulting substance is a compound. The resulting mineral will not burn or be magnetic because the compound has different properties to the elements themselves. For example, chlorine gas is toxic and sodium reacts violently with water, but sodium chloride is table salt, nor toxic nor explosive. Hope this helps
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What is the pattern of valence numbers on the periodic table?
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Answer:

In general, the number of valence electrons is the same within a column and increases from left to right within a row. Group 1 elements have just one valence electron and group 18 elements have eight, except for helium, which has only two electrons total.

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3 years ago
Classify each property as intensive or extensive. Color, temperature, volume, hardness, mass, boiling point, length, density
mr_godi [17]

Answer:

Intensive properties can be used to help identify a sample because these characteristics do not depend on the amount of sample, nor do they change according to conditions.

Explanation:

Intensive properties are bulk properties, which means they do not depend on the amount of matter that is present. Examples of intensive properties include:

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3 0
3 years ago
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Which describes the boundary where earthquake activity occurs along rift valleys? divergent boundary in the ocean divergent boun
Mila [183]

Answer:

Divergent boundary on land

Explanation:

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Rift valleys are created by tectonic activity and not the process of erosion.

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The most well-known rift valley on Earth is probably the so-called "Great Rift Valley System" which stretches from the Middle East in the north to Mozambique in the south. The area is geologically active, and features volcanoes, hot springs, geysers, and frequent earthquakes.

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According to data, the ΔH of mercury is approximately 11.6 kJ/kg.

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