Chemical reaction is clearly incorrect.
Product is the end result of a chemical reaction.
Compound is molecules joined together.
Therefore, I would probably say solution.
Answer:
Baking soda has a ph of 9
Explanation:
Answer:
All groups have the same number of valence electrons.
Explanation:
groups are the columns.
Answer:
Power plants.
Explanation:
When power plants start the burning coal process, the chemical bonds carrying its carbon atoms are brake down and releasing energy also carrying heavy metals such as lead, mercury, and cadmium into the atmosphere.
When the sulfur which is present in coal reacts with oxygen it produces sulfur dioxide and they the ability to combines with other lethal toxic molecules that are found in the atmosphere and form small, acidic particulates that can cause several diseases in humans.
Answer is "A".
Explanation;
Physical changes mean an arrangement of particles of a given substance without producing new substance but changes in physical form of the substance.
<em>Example :</em> vaporization of water ( water goes its gaseous phase from liquid form).
Chemical changes mean an arrangement of particles while forming new substance.
<em>Example : </em>heating of CaCO₃. (In this process CaO and CO₂ are formed).
In this problem, the volume of water has decreased. Hence, it can be said that this is an example of physical changes due to not forming of new substance.