Samuel adds a teaspoon of salt to a glass of water. he notices that the salt disappears. samuel takes a sip to discover that the water tastes salty. what kind of change has occurred? a) it’s a chemical reaction because a new substance has formed. b) it’s a physical change because the water and the salt kept their original properties. c) it’s an example of synthesis because two substances reacted to give one substance. d) it’s a chemical reaction because the water now tastes salty but originally did not

Option (b) is the correct answer.

Explanation:

When a teaspoon of salt is dissolved in water then it will completely dissociate into ions forming a homogeneous solution.

This is because particles of salt will evenly distribute into ions in the water.

This is a physical change as salt has dissociated into its ions and it has not chemically combined to the water molecules.

Hence, both salt and water will retain their chemical; properties.

Thus, we can conclude that in the given situation it’s a physical change because the water and the salt kept their original properties.

some of the qualities most frequently associated with the baroque are grandeur, sensuous richness, drama, vitality, movement, tension, emotional exuberance, and a tendency to blur distinctions between the various arts.

in scientific notation, the value of the  speed of light in a vacuum

  will be written as 2.995 * 10^8. when this value is represented in the form of

  a * 10^b, then, a = 2.995 and b = 8.

the value of the speed of light in a vacuum given above can also be rounded up to approximately 300000000. in this case, the scientific notation will be written as 3 *10^8.