1.
what would likely happen if you were to touch the flask in which an endothermic reaction were occurring?
the flask would probably feel warmer than before the reaction started.
the flask would probably feel cooler than before the reaction started.
the flask would feel the same as before the reaction started.

The flask would probably feel cooler than before the reaction started.

Reasoning:

Endothermic is a process or reaction accompanied by or requiring the absorption of heat

a

explanation:

indicate valleys, hills, steepness and gentleness of slopes.

explanation:

contour lines on a map indicate elevation, or depth. numeric notations on contour lines refer to the level of elevation, or height about sea level.