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a chemical change is a change which brings about a change in the chemical properties of a substance which cannot be reversed through physical means like heating or cooling.
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∙ 13y ago
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Is the melting of an ice cube considered a physical change or chemical change Explain your reasoning?
The melting of an ice cube is considered both a physical change and a chemical change simply because a chemical change is something burning, so if the ice cube is cold and hot at the same time, it's both a physical change and a chemical change.
What law of chemical change is obeyed when a chemical equation is balanced and explain?
conservation of mass law, no matter is ever created or destroyed (except for nuclear fusion)
Is melting ice a chemical or physical change explain?
It is a physical change because when you have a chemical change it changes the properties and makes it into a new thing, and it can't be reversed. Physical changes are usually just changes of states (solid, liquid, gas) and a physical change can be reversed.
Explain why sublimation is regarded as a physical change but the slaking of lime is considered as a chemical change?
- Sublimation don't change the molecule; solid iodine or sublimated iodine are iodine. - Slaking of lime transform the calcium oxide in calcium hydroxide. A chemical change occur.
Is burning a fire a physical or chemical change?
Burning is a chemical change.
Explain how wood burning in a fire place undergoes a chemical change?
Burning is an oxydation reaction so a chemical change.
Explain why burning butter is a chemical change but melting is not?
Melting: change of phase, a physical phenomenon without change of the composition. Burning: a reaction of oxydation, a change of composition - a chemical change.
Is evidence of a chemical change?
Explain how a mixture of sand and salt can be separated.
Is twisting a wire chemical or physical change explain?
It is physical. The wire changes shape, but it is still made of the same materials.
Explain why water freezing is not a chemical change.?
Because the chemical formula remain the same - liquid water or ice or vapour.
In a candle explain both changes using the big idea of energy?
When a candle is burnt a physical AND chemical change takes place. Its a physical change when the wax is being melted because the chemical structure has not change, meaning it cannot be a chemical change. Its also a chemical change because you are burning the string. When you burn something the chemical structure DOES change, meaning it is a chemical change.
Is the melting of an ice cube considered a physical change or chemical change Explain your reasoning?
The melting of an ice cube is considered both a physical change and a chemical change simply because a chemical change is something burning, so if the ice cube is cold and hot at the same time, it's both a physical change and a chemical change.
When the banana, berries, water, and hot dog are blended, does a physical or chemical change occur?
both physical and chemical change occur
Does food go thought a chemical physical or both change during digestion Explain?
Both
Explain how carbonic acid weather rocks?
Carbonic Acid can change the chemical composition of minerals and rocks.
Is burning a match a phase change?
Is burning a phase change. Explain? Ans: No because, its a chemical reaction
Is stone breaking a physical change?
Breaking of stone is a physical or chemical change? Explain.
