The burning of magnesium involves a conversion of

Chemical energy to heat energy

Explanation:

Magnesium metal when exposed to flame, it react with the oxygen in air to form white colored powered, known as magnesium oxide with the evolve of heat.

The balanced chemical reaction is shown below as:-

In the reaction the chemical energy which is stored in the chemical bonds of the magnesium and oxygen gas releases which makes the molecules surrounding the system gets heat up and thus, changes to thermal or heat energy.

Thus, The burning of magnesium involves a conversion of chemical energy to heat energy.

in cartography, a contour line (often just called a "contour") joins points of equal elevation (height) above a given level, such as mean sea level. a contour map is a map illustrated with contour lines, for example a topographic map, which thus shows valleys and hills, and the steepness or gentleness of slopes.

explanation:

both adhesion and cohesion are attractions.

they are different in that adhesion is the force of attraction between the molecules of two different substances, whereas cohesion is the force of attraction between molecules of the same substance.

possible examples include capillary action, in which the adhesion between water and glass causes the water to rise in a narrow tube against the force of gravity.

because of hydrogen bonding, water is extremely cohesive.

this causes molecules on the surface of water to be drawn inward, which is why drops of water form beads on smooth surfaces.

hope this .