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What is a chemical change?
A chemical change is a change in which a substance turns into a completely different substance that can't be reversed. A chemical change often happens when a substance burns (not to be confused with evaporation or melting of a substance), changes colors, a substance spoils or rusts, photosynthesis or respiration, and/or a substance tarnishes.Some examples are a bike rusting, burning bread to make toast, fireworks exploding, milk spoiling, a leaf changing color, mixing eggs and flour for a batter, baking a cake, etc.A chemical change will NOT dissolve, go through a state of matter (sublimation, decomposition, melting, freezing, evaporation, and condensation), breaking or tearing of a substance, and/or anything that can be reversed back.A chemical change is one in which one or more new substances are formed. Simple examples include burning and rusting.
What colors do your eyes respond to when you look at a green leaf?
Violet, blue, and red are the colors your eye responds to most when looking at a green leaf.
Why does water roll off the surface of a leaf?
because the leaf is non polar or Because the leaf is coated in lipid molecules
Is a leaf a tissue or an organ?
Yes, the leaf is considered a plant organ.
What would be the conclusion after testing a leaf for starch?
Starch is produced by leaves during Photosynthesis, therefore if the leaf has not been exposed to light then it will not contain starch, and so when tested the Iodine will stay Yellow/Brown. Consequently if the leaf has been left in the light Photosynthesis will have taken place and when tested the Iodine will go Blue/Black showing that Starch is present. Hope this helps :)
Is dew forming on a leaf a physical change?
Making salt by mixing sodium and chlorine is it a physical or chemical which one
Is the dying of leaf is chemical change or physical change?
Chemical
When the leaf color changes in autum is it a physical change or chemical change?
It is a chemical change, a degradation of the compounds from the leaf.
Is the change in leaves a chemical or physical change?
The change is leaf color is a chemical change.
Is a leaf that caries photosynthesis is that chemical or physical change?
chemical
Is leaf rotting a physical change?
The decay of organic matter such as leaves is a chemical change.
Is crushing a leaf a chemical change?
Crushing a leaf is a physical change, not a chemical change because the chemical composition of the leaf remains the same before and after crushing. However, if the crushing process causes the leaf to release certain chemicals due to breaking of cell walls, then it can result in a chemical change.
Is a leaf chaning color a physical or chemical change?
Chemical. It has to do with the closing of the part that connects the leaf to the tree and the lack of nutrients causes the leaf to turn colours.
When does the color change in a leaf indicate physical change and when dos it indicate chemical change?
The color change in a leaf typically indicates a chemical change when it results from the breakdown of chlorophyll and the revealing of other pigments, such as carotenoids and anthocyanins, as the plant prepares for winter. This process involves biochemical reactions that alter the pigments present in the leaf. Conversely, a physical change may be indicated if the color change is due to external factors like exposure to light or temperature without altering the leaf's chemical composition.
Is a leaf turning brown a physical or chemical change?
Photosynthesis makes a leaf green so when it turns brown it has stopped doing photosynthesis so most likely it is chemical change. Helpful enough? :|
Does drying wood in a shed result in chemical change?
Drying wood in a shed does not result in a chemical change because the process involves the removal of water through evaporation, which is a physical change. The structure and composition of the wood remain the same.
Is leaves changing colors in autumn a physical or chemical change?
chemical
