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xxTIMURxx [149]
3 years ago
7

HELP PLEASE!!!How are both stability and change seen in properties of elements? ​

Chemistry
1 answer:
liraira [26]3 years ago
6 0

Answer:

In both natural and built systems, stability and change are an important focus of study for both scientists and engineers. Stability refers to a system that is unchanging. ... A dynamic equilibrium exists when chemical reactions or physical movements occur at rates that balance out, creating no net change in a system.

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A cube of gold-colored metal with a volume of 64 cm has a mass of 980 g. The density of pure gold is 19.3 g/cm³. Is the metal pu
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No, the metal is not pure gold because density is equal to mass divided by volume and in this case we end up with about 15.3, making this metal less dense than gold.

Explanation:

8 0
4 years ago
Under what circumstances can an atom emit a photon
blagie [28]

Answer:

Here

Explanation:

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3 0
3 years ago
Using 3 – 4 sentences explain (in your own words) why water expands when it freezes?
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Water has this unusual behavior when cooled at <span>4 degrees Celsius; it expands slightly until it reaches the freezing point and continue to expand by approximately 9%. This characteristic has something to do with the structure of the water molecule where there is a strong tendency to form a network of hydrogen bonds and each hydrogen atom is in a line between two oxygen atoms. These bonds force the crystalline structure to be very open into hexagonal form and expand dramatically.
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8 0
3 years ago
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Which statement is true of a chemical change?. A.. It involves changes in the molecular structure.. B.. It involves changes in p
drek231 [11]
A is the answer. Chemical changes happen when atomic bonds are broken or created during chemical reactions. Hence, in this case, it involve changes to molecular structure.

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3 0
4 years ago
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DETERMINE THE MOL OF WATER NEEDED TO REACT WITH1.5 MOL OF NITROGEN DIOXIDE. 3NO2+ H20→ 2HNO3 + NO
dexar [7]

Answer: 0.5 mol h2o

Explanation: Hope this help :D

8 0
3 years ago
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