C. Chemical change because it doesn’t change it chemical makeup but it will change temps it’s physical appearance and phase change or change of state
Answer:
the 3rd option for make sense,so that's out
Dalton was the pioneer behind the atomic model,but he certainly didn't believe in the nucleus or electrons,much lest electron shells.
Chadwick's discovery was the discovery of the neutron,not electron energy levels.
Niels Bohr's model was an attempt at explaining the hydrogen atom's spectrogram,followed by Erwin Schrödinger.Thus the first option is the answer
Answer:
In the case of the compounds known as acids, the common characteristics include a sour taste, the ability to change the color of the vegetable dye litmus to red, and the ability to dissolve certain metals and simultaneously produce hydrogen gas.Aug 6, 2017
Explanation:
HERE IS THE COMPLETE QUESTION;
Which of the following describe chemical (not physical) changes?
a) a spoonful of table salt dissolves in a bowl of soup.
b) the growth of plants depends upon the sun's energy in a process called photosynthesis.
c) a flashlight beam slowly gets dimmer and finally goes out due to a dying battery.
d) the helium gas inside a balloon tends to leak out after a few hours.
e) frozen orange juice is reconstituted by adding water to it.
<em>The correct statements that answer the question are;</em>
<em />
- the growth of plants depends upon the sun's energy in a process called photosynthesis.
- a flashlight beam slowly gets dimmer and finally goes out due to a dying battery.
- Chemical changes can be regarded as one that takes place when there is occurrence of chemical reactions
- The reaction in chemical change involve formation of new chemical elements or formation of new compounds .
- Physical changes can be regarded as changes that does not lead to formation of new chemical substances
- the growth of plants here can be regarded as chemical change this is because there is formation of new product, and the sun's energy this process is as a result of photosynthesis which is a chemical process
- <em>When a flashlight beam and started gets dimmer a</em>nd then goes out, this is because of dying battery is chemical process, the battery contains some chemical elements and there is chemical reaction going.
- When the helium gas that is inside a balloon leak out, it is considered a physical process , no reaction has occurred.
<em>Therefore, Chemical changes can be regarded as one that takes place when there is occurrence of chemical reactions </em>
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