Identify and explain exothermic and endothermic reactions in terms of energy transfer

1 answer:

5 0

Exothermic reaction is when the system releases energy to the surrounding, the energy (in the perspective of the system) will have a sign of negative, as the system is transferring energy towards the surrounding.

Endothermic reaction is when the system is absorbing energy from the surrounding, the energy (in the perspective of the system) will have a sign of positive, as energy is transferred to the system.

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The density of gas particles in a section of Earth’s atmosphere decreases. Which of the following is the most likely explanation

Bad White [126]

This is due to the fact that the air pressure in that certain section of Earth’s atmosphere decreased. As density of gas particles decreases as air pressure decreases. Therefore, density of gas particles and air pressure have a direct relationship. An increase in air pressure would then effect to an increase in gas particles.

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3 years ago

Which of the following lends itself to the use of a descriptive method? a. Jonathan would like to develop a hypothesis regarding

Marianna [84]

Answer:

a. Jonathan would like to develop a hypothesis regarding the role of parental expression of affection in reducing toxic stress in early childhood.

Explanation:

A descriptive method is commonly known as a research method for describing the properties or features of the research area being investigated. Descriptive research is usually conducted by studying the trends of the phenomenon without changing the value of any variable in the system. Thus, the correct answer is option a.

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according to john dalton’s observations, when elements combine in a compound, a. the ratio of their masses is always the same. b

yawa3891 [41]

Answer:

The correct answer is a.
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Explanation:

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3 years ago

Read 2 more answers

All bodies of water make up a earth's

Delvig [45]

Hey there!

The answer is C, hydrosphere.

The prefix "hydro" means water.

"Sphere" relates to Earth.

The asthenosphere and lithosphere are parts of the crust and mantle of the earth.

The atmosphere is the gases that surround the planet.

Hope this helps!