Chemical Change: A chemical change is when there is a chemical reaction and a new substance is formed because of that. The composition of the substance changes, and there is usually energy being released or absorbed. An example of this would be burning wood. In this case, oxygen is reacting with the wood to produce ash, energy, and smoke.

2024年5月23日 · The definition of chemical change is a change that produces one or more new substances. When the wood rots, you are unable to take the rotted wood and mold and make it back into wood that is yet ...

2019年9月23日 · A chemical change, usually irreversible, results in the formation of new substances, the release or absorption of energy, and sometimes the production of gases or solids. Indicators of a chemical change include changes in color, production of a gas, formation of a precipitate, and changes in temperature.

2024年5月22日 · Cooking sausage is a chemical change because the heat from cooking causes chemical reactions to occur in the sausage. These chemical reactions change the composition of the sausage, leading to the ...

2024年5月25日 · A physical change is that the paint on the car loses its color. A chemical change is that the element Al (Aluminum) and O (Oxygen) react with one another to form Al2 O3 (rust).

2024年12月17日 · Evidence of Chemical Reaction -Color Change Substances often change color during a chemical reaction. For example: Gray iron rusts, the product that forms is a rusty/ flaky brown coating. ..so yes ...

2024年5月22日 · Mashing a potato is a physical change because it's the same substance (the potato is still a potato) but in a different form.- - - - -Making mashed potatoes from fresh potatoes is both a chemical ...

2024年5月23日 · It's a physical change.It's a chemical change. The concrete hardens through a chemical reaction called hydration :)Its a physical change. The Chemical change already happened when the water was added.

2024年5月24日 · A chemical change would would result in the formation of one or more new chemicals. For example, burning paper is a chemical change. You have paper and fire, and when you burn the paper up, it ...

2023年11月3日 · Paper shredding is a physical change, frying an egg is a chemical change. Explanation: The statement 'Paper is shredded' is an example of a physical change. Shredding paper involves breaking it into smaller pieces, but the composition and properties of the paper remain the same. The statement 'An egg is fried' is an example of a chemical change ...