You are told an object has undergone a physical change. What prediction can you make about how the object has changed?(HELP ITS URGENT)
A. The object was solid and has melted into a liquid
B. The object is now a different color than it was before.
C. The object is permanently changed.
D. The change in the object can be reversed.
Answers
Answer:
a Solid to liquid
The process of a solid becoming a liquid is called melting. (an older term that you may see sometimes is fusion). The opposite process, a liquid becoming a solid, is called solidification. For any pure substance, the temperature at which melting occurs—known as the melting point—is a characteristic of that substance.
b
A timed ticket must be purchased online prior to your arrival and face masks are required ... Shine different color lights onto objects and watch as the colors change. ... If you now shine a blue light onto that blue object all the blue can reflect off of that “blue ... What do you notice when then light matches the color of the object
c
A change in shape is called deformation : elastic deformation is reversed when the force is removed. inelastic deformation is not fully reversed when the force is removed - there is a permanent change in shape.
d
Yes, the velocity of the object can reverse direction when its acceleration is constant. For example consider that the velocity of any object at any time t is given as: v(t) = t – 2.
Answer: A. The object was solid and has melted into a liquid
Explanation: Hope it helped.