No
It undergoes a physical change because the matter that makes up the sidewalk does not change. THe side walk goes through a chemical and physical change because the heat makes it constrict by shacking the particles just like it happens with food
The sidewalk being warmed by the heat of the sun is a physical process. The sun's rays transfer heat energy to the sidewalk through radiation, causing the molecules in the sidewalk to vibrate more rapidly and increase in temperature. This is a physical change as no new substances are being formed in this process.
No. The sidewalk is still a sidewalk. All of the same molecules are still there in the same arrangement.
Origami is a physical change because it involves the folding and manipulation of paper without altering its chemical composition.
A physical change that does not produce a new substance is called a reversible change. This means the change can be undone by reversing the process, such as melting or freezing.
It undergoes a physical change because the matter that makes up the sidewalk does not change. THe side walk goes through a chemical and physical change because the heat makes it constrict by shacking the particles just like it happens with food
Salt is a material not a change.
The sidewalk being warmed by the heat of the sun is a physical process. The sun's rays transfer heat energy to the sidewalk through radiation, causing the molecules in the sidewalk to vibrate more rapidly and increase in temperature. This is a physical change as no new substances are being formed in this process.
Sweeping the floor is considered a physical change because it involves the removal of dirt and debris without altering their chemical composition. The materials being swept, such as dust and crumbs, retain their original properties; they are simply relocated from one place to another. This process does not create new substances, which is a key characteristic of physical changes.
physical change because by adding salt you are lowering its melting point thus can melt the ice at low temperature.
broad
Yes, cracks that form in a sidewalk during winter can be considered a result of a physical change. This occurs primarily due to the freeze-thaw cycle, where water seeps into existing cracks, freezes, and expands, causing further cracking. The process does not alter the chemical composition of the concrete; instead, it changes its physical structure. Consequently, these cracks are indicative of physical stress and environmental factors rather than a chemical change.
Yes, the noun 'sidewalk' is a concrete noun, a word for a physical thing.
Yes. The melting point of salt solutions is lower than that of pure water.
Cracks on a sidewalk next to a tree are primarily caused by physical weathering. The tree roots grow and expand, exerting pressure on the sidewalk, which eventually causes it to crack. This is a mechanical process rather than a chemical one.
yes
No. The sidewalk is still a sidewalk. All of the same molecules are still there in the same arrangement.