Which of the following occur during all nuclear reactions? check all that are true

a. an atom splits into smaller atoms.

b. an atom becomes a new element.

c. an atom’s nucleus is affected.

d. some mass is turned into energy.

True answers would be B, C, and D.

A:  This statement is not true. The "splitting" that is seen in nuclear reactions is shown in the nucleus of an atom, not the atom itself splitting.

B: This statement is true, see the equation I created below, which illustrates the creation of oxygen atoms.

4He^2+14N^7→17O^8+1H^1

C: This statement is true. In nuclear fission, one form of a nuclear reaction, an atom's nucleus is split into smaller parts, which quite obviously affects the nucleus, seeing as it is now in several parts.

D: This statement is true. We know this because of the well known equation created by Einstein, E = mc2. In a nuclear reaction, mass is not strictly conserved.  Some of the mass is converted into energy.

I hope this was helpful! Let me know if you need any further explanation. I tried my best to thoroughly explain this, as I have background in this sort of education.

lets get this bread mom

d concave shape of wave rock

explanation:

the concave shape of wave rock is a very good evidence that supports the evolution of earth due to chemical weathering. if we talk about structure of   wave rock, studies have estimated that it is around 2.7 billion years old. it also serves as the foundation of evidence that it was the place where australian continent began to form.

how the structure of wave rock was created?

studies suggest that structure of wave rock was created when the surrounded area was started to weather due to which deposition of material started on the part of land which now contains wave rock.

the structure of wave rock is considered to be one of the best-known landforms in australia. at the height of around 15 cm, there can be found flared slopes which formulate the margins of hyden rock. it is now assumed by geologists that wave rock was created by subsurface water-induced weathering and not by glaciers, waves or wind.

due to deposition of material over the period of long time, the wave rock became tougher and tougher due to weathering from surrounding terrain. this makes it a physical evidence that supports   the evolution of earth due to chemical weathering.

hope it !