During a lesson in physical science about changes of matter, students made ice cream. among the materials that are required to make ice cream is salt. which answer choice best explains the role of salt in this activity? adding salt to ice lowers the freezing temperature. this the milk mixture to freeze sooner because the mixture will reach the freezing temperature sooner. adding salt to the ice raises the freezing temperature. this the milk mixture to delay in freezing, giving the ice cream enough time to form and have a great taste. adding salt prevents the milk in the ice cream from going bad and giving the ice cream a bad taste. salt in ice cream preparation is used as a preservative to enable the ice cream to have a longer shelf life.

The answer is A. Have a nice day!

the force represented by vector a is normal force. if the hockey puck is moving to the right, when it is hit with a significant force by the hockey stick the puck will move off in a different direction. correct on edge.

chemical energy --> gravitational potential energy --> kinetic energy --> elastic potential energy --> gravitational potential energy

explanation:

when emma starts the hike, the chemical energy stored in her body is used to climb up the mountain, and so she gains gravitational potential energy (because at the end, she will be at a higher height h above the ground). then she goes bungee jumping: as she falls, this gravitational potential energy is converted into kinetic energy (because her speed increases as she falls down), until the point when the rope stretches, and she stops moving. at that moment, all the kinetic energy is converted into elastic potential energy due to the stretching of the rope. then, this energy is released because the rope returns to its natural length, and emma gains a small increase in altitude , so she gains some gravitational potential energy.