Yes and no. The tree (the wood fiber) undergoes a mechanical change from the chainsaw blades. The friction from the blades causes heat, which in turn causes a chemical change- the wood begins to burn. This bonds the cellulose with oxygen and that is why often there is smoke produced.
You're not changing the substance when you chop wood. Therefore, it is a physical change.
Lighting a match starts a chain reaction which boosts the materials of the match tip, the wood with oxygen. These process changes the substance chemical formula, thus chemical change happens.
Yes. Photosynthesis involves the transfer of electrons. Photosynthesis causes a chemical change. All chemical changes involve either the transfer of electrons or a change in the configuration of electrons. No other way exists to make a chemical change.
Yes
You get a chain saw...
The act of grinding the food is not chemical change, as the same molacules are present in the same form, but there are many chemical reactions in the mouth (such as the breakdown of long chain carbohydrates), and other processes which aid digestion (mixture with mucus)
Hunting for their tusks or for their meat and skin, disease, pollution/chemical poisoning, and a disruption in their food chain.
Heat causes the breakdown of starches (long chain carbohydrates) into simpler to digest sugars (mono and dimer carbohydrates). This involves breaking chemical bonds, so it is a chemical change.
by getting a chain saw and cutting through it
Yes, most of smells come from esters which can be derived from carboxylic acids, but they also come from adlehydes, ketones, alcohols, and terpenes. These smells get stronger with the greater amount of carbons in a chain or ring. Low molecular weight esters give fruits their odors and flavors while carboxylic acids have a more acrid and repellent stench. All of this is organic chemistry.
A derailleur is a part on a bycicle that changes the gear by pushing the chain either up or down the sprockets.
yes it coukd cause lost of homes,cars,humans,and many more living/non living things.