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Does salt on a sidewalk cause mechanical or chemical weathering to the sidewalk?
Chemical, the sodium in the salt exchanges with calcium in the concrete. The chemical products are all water soluble and the surface of the sidewalk washes away.
Is melting ice by spreading salt on an icy sidewalk a chemical or physical change?
physical change because by adding salt you are lowering its melting point thus can melt the ice at low temperature.
Is salt a chemical or physical property?
Salt is a chemical compound. It has chemical and physical properties.
Is sweeping a sidewalk a physical change?
No
Is salting the ice on the sidewalk a chemical change?
Yes. The melting point of salt solutions is lower than that of pure water.
When table salt forms from its elements is it chemical or physical change?
It is chemical. It is chemical because when salt is formed from elements it becomes a chemical and not a physical.
Is cracks on a sidewalk next to a tree physical or chemical weathering?
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.
Is mixing salt and water a chemical change or physical?
Physical
Side walk is warmed by the heat of the sun physical or chemical?
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.
What is a sidewalk warmed by the heat of the sun a chemical or physical change?
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
Is mixing salt and water chemical?
Mixing salt and water is a physical change, not a chemical change. The salt does not change its chemical composition when it dissolves in water, only its physical state.
Is pop and salt a physical or chemical change?
Chemical
