Identify each of these substances as acidic, basic, or neutral. ___ pure water, pH = 7.0

___ lake water, pH = 6.5

___ baking soda solution, pH = 9

___ soapy water, pH = 12

Answers: neutral, acidic, basic, basic

pure water is neutral . Lake water is acidic. Baking soda and soapy water are basic.

Explanation: 7 is neutral. The higher on the ph scale like 1-6 is acidic. The lower on the scale 8-13 is base or alkaline.

in chemistry, adhesion and cohesion are attractive forces that exist between molecules. they hold the molecules together from each other. they are different in that adhesive force exists between molecules of different substance while cohesive force happens between molecules of same substance.

adhesion between water and glass causes water molecules at the edge of water and glass interface to climb up the wall in a narrow glass tube. this is called capillary action. cohesion is what gives glass its shape and causes water to form a droplet.