It is true that a chemical reaction causes a chemical change. An example of this can be seen by adding baking soda to vinegar.
False
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False. When water changes to steam, it undergoes a physical change, not a chemical change. Heating water to its boiling point causes it to change from a liquid to a gas, but the chemical composition of water (H2O) remains the same.
True. The souring of milk is a chemical change caused by the breakdown of lactose sugars into lactic acid by bacteria. The change in odor is a result of this chemical reaction.
False. A chemical reaction does not occur simply by forming a solution. A chemical reaction involves the breaking and forming of chemical bonds between atoms, resulting in the conversion of reactants into products.
It is true that when bonds are broken there is chemical reaction. Then heat energy is released.
false. atoms can either be fused or defused in all chemical reaction.
False. The change of water from liquid to gas is a physical process known as evaporation, not a chemical reaction. This process occurs when water molecules gain enough energy to overcome the forces holding them together in the liquid state.
unnecessary will change physically depending on what type of reaction, sometime chemically change . For example physically change are ice to water (solid to liquid) Chemically change are HCl + NaOH = NaCl + H2O ( the content changed )
False
False. Changing the size and shape of pieces of wood is a physical change, not a chemical change. A chemical change involves the alteration of the chemical composition of a substance, while a physical change only affects the physical properties of a substance.
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