There are three main ingredients in any paint:
1. solvent ("carrier"),
2. color,
3. and film-former ("resin" or polymer).
Solvents are liquids (alcohol, toluene, water, etc.) which carry the color. Nowadays, most paints are water-based, meaning that their solvent is mainly water. Color is added with either dye or pigment. More often pigment is used because it lasts longer. Finally, resins are added which give the paint various characteristics, including how the paint flows, dries, how smooth it looks, how it sticks to different surfaces, etc. Resins are polymers which come in all shapes and sizes; some are natural like gums or starches, and a lot are synthetic like acrylic polymers used in house paints. Other stuff that is added to paints: fillers like clay or opacifiers (make the paint hard to see through), surfactants (chemicals that help stabilize the paint so it lasts longer or brushes easier), "antimicrobial" agents (keeps bacteria and bugs from growing in water-based paint), etc.
By pushing the brush to the wall you apply a force. The paint is pushed to the wall and will be in touch with the wall. Due to the resin, the paint has a high visco-elasticity, which means that it can be streched without breaking (like bubble-gum). By pushing the paint to the wall and move the brush along the wall, you 'strech' and 'scratch' the paint from the brush onto the wall. Surface tension also plays a role: liquids, like the water used in paints, always want to minimize their surface, hence want to form droplets. However, the paint is pushed onto the wall and needs extra paint from the surrounding area to form droplets. So the paint on the wall attracts extra paint(water) from the brush to be able to form droplets on the wall.
In regards to how paints dry on a molecular level: imagine that the resin exists as tiny drops in the water surrounded by tiny surfactant molecules. Also imagine the pigment as tiny (particles) in the water surrounded by surfactants... Once you brush paint out onto the wall, the resin droplets begin to lay down onto the surface as the water or solvent begins to evaporate. The resin droplets then "coalesce" or migrate closer together and bind (stick) to each other. The pigment particles begin to stick to the resin. The resin droplets eventually fuse together into one long polymer film on the wall, with the pigment particles trapped and stuck in it.
Yes! I have used both combinations of wall paint in poster paint & vice versa..I used one to tint the other in each instance & noticed that it affected the adhesion as well as the ability to block stains if adding poster paint to wall (white-ish) paint..by adding wall paint to poster paint it made poster paint stick better, flow from brush better, & require fewer coats..all of this while using a high quality acrylic wall paint..
No, magnetic paint just allows magnets to stick to the paint, it is not magnetic itself. Even if it was, it would be much too weak to cause any damage.
Most glues will stick to gloss paint.
Latex paint can stick to the floor grouting.
The paint becomes part of the wall.
Take a piece of paper cut the shapeof the paint on the wall. Then take an elmers glue stick put it on the paper and then put the paper on the wall. Then you take the screwing side of the glue stick and use it to take all the bubbles and creases out and it stays.
Yes! I have used both combinations of wall paint in poster paint & vice versa..I used one to tint the other in each instance & noticed that it affected the adhesion as well as the ability to block stains if adding poster paint to wall (white-ish) paint..by adding wall paint to poster paint it made poster paint stick better, flow from brush better, & require fewer coats..all of this while using a high quality acrylic wall paint..
No, magnetic paint just allows magnets to stick to the paint, it is not magnetic itself. Even if it was, it would be much too weak to cause any damage.
Most glues will stick to gloss paint.
Yes, acrylic paint will stick to a pumpkin.
Yes, acrylic paint will stick to pumpkins.
Yes, glitter will stick to acrylic paint.
The equal and opposite reaction is the wall pushing back against you. When you hit the wall with a stick, the force you exert on the wall is transferred to you through the stick, causing the wall to push back with an equal force. The stick simply transmits this force between you and the wall.
No, acrylic paint will not stick well to oil-based paint without proper preparation.
Latex paint can stick to the floor grouting.
Yes, acrylic paint will stick to white cardboard.
Yes, it will stick to most wall coverings.