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The melting of ice cubes is a exothermic reaction?
No, it is a physical change, not a chemical reaction.
Freezing is a change of state true or false?
Yes, freezing is change of state, from liquid to solid. Freezing is a physical change, not a chemical change.
What is the rate of change from 1 minute to 4 minutes?
The rate of change requires two variables. Usually some physical measure and time (or distance), and the rate of change is the difference in the physical variable per unit change in time (or distance). The question contains only one variable.
What does it mean when there is a little triangle in an equation?
The little triangle is the Greek letter delta, and it means change. This shows up in chemical equations in particular, used to indicate a change in energy as a product of a reaction.
Are rates of change always constant?
If I understand correctly your question, the answer is definitely no.Think about the typical physical representation of the concept of "rate of change": the velocity is the rate of change of position, right? And there's no difficulty in imagining a non-constant velocity, as when you accelerate or decelerate..
