Chemistry, 02.12.2020 07:10 talyku843

EXPLAIN What is one way that the thermal energy of a system can be changed?

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Answer from: theonefreshmen

The thermal energy of a system is the amount of heat energy in it.

One way to change thermal energy is by alter the system by introducing a new object to the system.

The thermal energy of a system is calculated using:

$E = \frac 12 mc\theta$

Assume the mass of the system remains unchanged.

When an object is introduced to the system, the thermal energy becomes:

$E_2 = \frac 12 mc(\theta + \alpha)$

Where:

$\alpha \ne 0$ --- the temperature of the object.

Expand:

$E_2 = \frac 12 mc(\theta) + \frac 12 mc (\alpha)$

Substitute: $E = \frac 12 mc\theta$

$E_2 = E + \frac 12 mc (\alpha)$

This means that the thermal energy of the system will change by the thermal energy of the object that is being introduced to the system.

Hence, one way the thermal energy can be changed is to introduce a new object (or matter).

Read more about thermal energy at:

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Answer from: UnusualKc2358

When the temperature of an object increases, the average kinetic energy of its particles increases. When the average kinetic energy of its particles increases, the object's thermal energy increases. Therefore, the thermal energy of an object increases as its temperature increases.

Explanation:

BTW I GOT THE ANSWER FROM KRISTINA

EXPLAIN What is one way that the thermal energy of a system can be changed?

Answer from: Quest

you need to take a look at the periodic system in order to sort these elements into pairs that would most likely exhibit similar chemical properties. first, you need to find elements that are found in the same group (groups are vertical in the periodic system), and then to see whether they have the same valence number. if they meet these criteria, they will have similar properties.

the first pair: ne (neon) and kr (krypton), are noble gases found in group 8

the second pair: li (lithium) and k (potassium), found in group 1

the third pair: s (sulfur) and te (tellurium), found in group 6

Answer from: Quest

in 1783 cavendish was working with his hydrogen gas and found that when he burned it and condensed the vapor it was water. this was very significant since it disproved the greek theory of elements completely since water was not a simple substance but the product of two gases. it was lavoisier who hearing of the experiment gave cavendish's gas the name hydrogen ("water-producer") and added that hydrogen burned by combining with oxygen and that water was a hydrogen-oxygen combination.

explanation:

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