Concave is not a type of mechanical wave because it doesn’t need a medium for propagation.
Answer:
B. It undergoes a physical change.
Explanation:
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In this case, since we know that chemical changes lead to the formation of new atoms and/or compounds due to the bonds rearrangement of the initial substances and the physical changes occur without changing the composition of the initial substances, we can infer that, since melting is a process that changes the phase of matter from solid to liquid without changing the identity of the initial substance, the answer to this question would be B. It undergoes a physical change. because the other options describe chemical changes.
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Cost more. Gas and oil have a very steady low price, and also the sun is not always out.
Does that help?
Answer:
Fluorine
Explanation:
These particles stick in the atoms and make them radioactive.
The answer is (2) release a large amount of energy. Nuclear fission form light nuclides from heavy nuclides. While nuclear fusion form heavy nuclides from light nuclides.
