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Ghella [55]
3 years ago
8

Is rubber band stretching physical or chemical

Chemistry
2 answers:
Gnoma [55]3 years ago
5 0

Answer:

physical

Explanation:

this is a physical action to create a change. does not involve chemicals or elements

Rus_ich [418]3 years ago
5 0

Answer:

\boxed {\boxed {\sf Physical \ change}}

Explanation:

A chemical change, as the name suggests, must result from a change in the chemical makeup and new substances are produced. A very common example is metal rusting.

A physical change can be observed without a change in chemical composition. No new substances are produces. Ripping paper and an ice cube melting are physical changes.

A rubber band stretching is a <u>physical change.</u> No new substances are made and the chemical makeup remains the same.

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Which best describes nuclear energy?
svet-max [94.6K]

Answer:

The correct answer is - D.  the energy stored inside the center of an atom.

Explanation:

Each atom has a small center in it called the nucleus and the energy that holds the nucleus or center of the atom together in the atom is known as nuclear energy.

It is the energy that is stored in the center of the atom and normally does not come out, however, in some radioactive atoms the sends some part of the energy as radiation.

Thus, the correct answer is - D.  the energy stored inside the center of an atom.

6 0
3 years ago
Which of the following are true for an element?       (i)Atomic number= number of protons + number of electrons      (ii)Mass nu
fredd [130]

Answer:

<em>ii</em><em> </em><em>and</em><em> </em><em>iv</em><em> </em>

Explanation:

atomic mass is the sum of protons and neutrons

protons ( postively charged) usually have the same number like electrons( negatively charged)

4 0
2 years ago
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Sonja [21]

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Explanation:

6 0
3 years ago
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Art [367]

i would say 4 because 4 is a gross number

4 0
3 years ago
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oee [108]
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7 0
2 years ago
Read 2 more answers
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