Answer:
Element
Explanation:
Carbon is an element found on the periodic table with the alias C
Used for energy by mammals
An activity that me, my family or friends engage in that causes pollution is the use of vehicles that run on fossil fuels for transportation.
<u>Explanation:</u>
Fossil fuels contribute to pollution in a large way. Burning of fossil fuels release gases like carbon dioxide, carbon monoxide, oxides of sulphur, nitrogen etc which accelerate pollution. Petrol and diesel are the common fossil fuels used in vehicles.
Easy transportation is the necessity that makes people chose this alternative. There are other alternatives to fossil fuels. Vehicles can use cleaner fuels like CNG and LPG.
The vehicles can also be powered by electricity. But switching to these alternatives has some limitations as well which makes people find it difficult some times. It would never be a simple matter to sop this activity considering how important fast transportation is in this era.
Explanation; -A water molecule can act as an acid or a base even in a sample of pure water. It acts as an acid (donates H+) when it reacts with a stronger base, say sodium hydroxide.
The yellow powder and the blue liquid producing a clear green liquid after mixing shows that these two substances are soluble.
The soluble substances are those which are completely mixed in each other producing a new solution. The insoluble substances are those, which do not mix together with each other, and remain separated. The miscible substances are those liquids which completely mix with each other forming a homogeneous mixture, while the immiscible substances are those liquids that do not form a homogeneous mixture when mixed.
Hence, the answer is 'soluble'.
