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What undergoes no chemical change during a chemical reaction?
A catalyst undergoes no chemical change during a chemical reaction.
What is a substance that speeds up a chemical reaction but does not change it self?
catalyst
Is flash cameras flashing a chemical or physical change?
The flash of a camera is a physical change, not a chemical change. A physical change is a change in the form of a substance without changing its chemical composition. In the case of a camera flash, electrical energy is converted into light energy, which is a physical process that does not alter the chemical makeup of the components involved.
How does a catalyst change the rate of a chemical reaction?
Lowers the activation energy of a reaction, therefore speeding the reaction up.Catalysts speed up chemical reactions. They do not change the products or reactants of the reaction, and are not used up or consumed in the reaction. Biological catalysts are called enzymes. Catalysts lower the activation energy (or energy needed to start a reaction), and cause the reaction to occur more quickly.
What is parent material?
The term "parent material" is generic and it refers to any type of substance or material which undergoes some process to produce another material. The term "parent material" can be used in geology, chemistry or radioactivity for three of many examples. In Earth science and geology , it may refer to mineral composition that weathers easily can produce more soil, for example. In nuclear physics, it is the radioactive material that decays to produce daughter nuclei. In chemistry, it is material that undergoes chemical change to yield another chemical.
