how can a egg be a chemical change? How can an antacid tablet be a physical and a chemical change?
what are some examples for chemical change that easy and safe to take to school for school project
An egg can undergo a chemical change when it is cooked because cooking involves heat that denatures the proteins within the egg. Denaturation is a chemical change as it breaks the molecular bonds, leading to a change in the physical properties of the egg, such as its form and texture.
Regarding antacid tablets, they can undergo both physical and chemical changes. When you drop an antacid tablet into water, it dissolves. This dissolution process is a physical change because the tablet is changing its physical state from solid to liquid. However, the active ingredients in the tablet, such as calcium carbonate, can react with the water and acids in your stomach to neutralize excess stomach acid. This chemical reaction is the primary purpose of taking an antacid. So, the tablet undergoes a chemical change as well.
To determine if a change is physical or chemical, you need to consider the following:
Physical change: A physical change is a transformation in a substance's physical properties, such as size, shape, or state, that does not alter its chemical composition. Examples include changes in temperature, dissolving, melting, freezing, and phase transitions.
Chemical change: A chemical change is a process that alters the chemical composition and results in the formation of new substances with different properties. Examples include combustion, oxidation, decomposition, and acid-base reactions.
In both cases, understanding the concept of chemical changes and physical changes helps identify the processes involved in transforming substances.