0
What else can I help you with?
Is mixing cement with water and letting it dry a physical change?
No, mixing cement with water and letting it dry is not a physical change; it is a chemical change. When water is added to cement, a chemical reaction occurs, leading to the hardening and setting of the mixture as it forms new compounds. This process is irreversible, distinguishing it from physical changes, which do not alter the chemical composition of the substances involved.
Is blowing up a blown and letting the air out a physical change?
Yes, blowing up a balloon and letting the air out are physical changes. In both cases, the balloon's shape and size are altered, but its chemical composition remains the same.
A physical change to a slice of tomato is letting it rot?
Letting a slice of tomato rot is primarily a chemical change rather than a physical change. During the rotting process, the organic compounds in the tomato undergo decomposition due to microbial activity, resulting in new substances and changes in texture, color, and smell. While the physical appearance of the tomato changes, the underlying chemical composition is altered, making it a chemical transformation.
Does letting tap water sit out evaporate minerals?
Letting tap water sit out may reduce the chlorine content as it evaporates, but it will not significantly affect the mineral content. Minerals in water do not evaporate like volatile compounds such as chlorine.
Is melting gold and pouring it into a molt a chemical change?
No it's not because all you are doing is melting the gold, putting in into a mold and letting it harden. It would be a chemical change if you added some other substance to it during the progress.
Can water and sodium chloride bond?
No. Sodium chloride in water dissolves into its individual Na+ ions and Cl- ions due to the polarity of the water molecule. This is not a bonding between water and sodium chloride. In fact there is no chemical reaction at all taking place. The dissolving of the sodium and chloride ions by water is a physical change, and can be reversed by letting the water evaporate.
Is mixing cement with water and letting it dry a physical change?
No, mixing cement with water and letting it dry is not a physical change; it is a chemical change. When water is added to cement, a chemical reaction occurs, leading to the hardening and setting of the mixture as it forms new compounds. This process is irreversible, distinguishing it from physical changes, which do not alter the chemical composition of the substances involved.
Is blowing up a blown and letting the air out a physical change?
Yes, blowing up a balloon and letting the air out are physical changes. In both cases, the balloon's shape and size are altered, but its chemical composition remains the same.
A physical change to a slice of tomato is letting it rot?
Letting a slice of tomato rot is primarily a chemical change rather than a physical change. During the rotting process, the organic compounds in the tomato undergo decomposition due to microbial activity, resulting in new substances and changes in texture, color, and smell. While the physical appearance of the tomato changes, the underlying chemical composition is altered, making it a chemical transformation.
What are some physical change recipes?
Some physical change recipes you can try are making homemade ice cream by mixing cream, sugar, and vanilla extract and then freezing the mixture, or making Jell-O by dissolving Jell-O powder in hot water and letting it set in the refrigerator. These recipes involve physical changes like freezing and solidifying without any chemical reactions occurring.
How does melting ice into water and then letting the water evaporate?
Tis cycle is melting to a liquid-------evaporation to a gas.
Does letting tap water sit out evaporate minerals?
Letting tap water sit out may reduce the chlorine content as it evaporates, but it will not significantly affect the mineral content. Minerals in water do not evaporate like volatile compounds such as chlorine.
How do you re-rock?
It depends on whether it was dissolved in water or just crushed up. If it was dissolved in water, it should re-crystalize as the water evaporates. If it was crushed up, aside from dissolving it in water and waiting for it to evaporate off, or melting it in a glass pipe and letting it recrystalize, there's no other way that I can think of to return it to its rock form.
Are there any conditions to obtain salt from sea water?
You obtain salt water by letting the sea water evaporate.
Is melting gold and pouring it into a molt a chemical change?
No it's not because all you are doing is melting the gold, putting in into a mold and letting it harden. It would be a chemical change if you added some other substance to it during the progress.
Is letting a nail rust a physical or chemical change?
I am quite sure that rust is a chemical change. Rust is caused when oxygen atoms begin bonding with the iron in the nail, which makes it a compound instead of a pure element.
How is salt obtained from salt mines?
Salt can be mined in three ways. It is either mined in the normal manner, via drilling and blasting, or solution mined via injection and pumping out of hot water, or by evaporation, wherein sea water is pumped into shallow ponds and letting it evaporate.
