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Zinaida [17]
3 years ago
13

Which statement best describes a physical change?

Chemistry
1 answer:
yulyashka [42]3 years ago
7 0
The answer is the third one .
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Imagine an alternate universe where the value of the Planck constant is 6.6207 x 10^-36 J*s.
hoa [83]

Answer:

See explanation

Explanation:

According to Louis de Broglie, particles could exhibit wavelike properties and have an associated wavelength.

Now for a turtle with a mass of 450. g, 29. cm long, moving at 2.7 cm/s, recall that we can only describe a by quantum mechanics when the body is very small and its associated wavelength is large.

This object has a large mass, hence it is discussed by classical rather than quantum mechanics

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3 years ago
Atoms of which element contain 25 protons?
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Mangenese is the element which have 25 protons
4 0
2 years ago
PLEASE HELP ME ASAP!
uranmaximum [27]

your answer is b hope this helps


7 0
3 years ago
Read 2 more answers
Which of the following is true about mechanical waves?
uranmaximum [27]

Answer:

C, Moves energy.

<u><em>i hope this helped at all. sorry if its incorrect, have a good day.</em></u>

3 0
2 years ago
Changes in thermal energy provide evidence that a chemical reaction
nadya68 [22]

Answer:

Exothermic reaction

Explanation:

Exothermic reaction is a reaction in which energy is evolved from the reaction to the surroundings

7 0
3 years ago
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