It's called a pH indicator.
Answer:
no I don't listen to them
If more reactant is added, the equation will shift to the right in order to make more product (which will increase the products)
presence of heat can change solid tu liquid
and liquid to gas
Answer:The strength of the gravitational force between two objects depends on two factors, mass and distance. the force of gravity the masses exert on each other.
Explanation: i hope it answers your question