Question

water can travel up a glass tube against the force of gravity! this is called capillary action. the model shows what happens when a thin glass tube is placed in a beaker of water. complete the sentences. forces cause water molecules to stick to the glass molecules in the tube. forces between water molecules hold the molecules together. when forces are greater than the forces, water appears to climb up the tube.

Explanation:

• Adhesive forces are the attractions between different substances (here, water molecules and glass molecules).
• Cohesive forces are the attractions between the same type of molecules (water molecules to each other).
• In capillary action, when adhesive forces (water - glass) are stronger than cohesive forces (water - water) and gravitational forces (pulling water down), water rises in the tube.

Answer:

Adhesive forces cause water molecules to stick to the glass molecules in the tube. Cohesive forces between water molecules hold the molecules together. When adhesive forces are greater than the cohesive and gravitational forces, water appears to climb up the tube.