Which of the following is evidence that a chemical change is occurring?

a. Cherry drink mix is added to water and the resulting
solution is red.

b. A white powder is added to cool tap water in a beaker
and the beaker gets hot.

c. Water is added to coffee until the solution becomes
clear.

d. Water is added to sand and the sand looks darker

The diagram below shows a cell placed in a solution.a cell is shown placed inside a beaker. it is labeled cell. the solution inside the beaker is labeled 40% salt solution and the solution inside the cell is labeled 20% salt solution.only water is allowed to move in and out of the cell. what will most likely happen to the cell? it will expand as water moves out of it. it will shrink as water moves out of it.it will expand as water moves into it. it will shrink as water moves into it.

Select all of the methods through which a drug can enter your body. injection swallowing inhalation absorption

The diagram below shows the movement of particles. what does this piece of evidence best support? the collision theory the maxwell-boltzmann distribution the effect of pressure on reaction rates the effect of temperature on reaction rates