8WHY?Frying an egg= it denatures the protein in the egg – the reaction is NOT reversibleToast= the bread turns brown & the texture changes, and odor is produced
9Physical or Chemical?PhysicalPhysicalagua hirviendolimonada fresca
10WHY?Fresh lemonade= it would be a physical change because the sugars are still comprised in the same way just now its extracted liquids.
11Physical or Chemical? PHYSICAL CHANGE CHEMICAL CHANGE Change in which the appearance of a substance changes, but chemically the substance is the sameEx: Phase changes in waterMelting BoilingEvaporatingAtoms DO NOT rearrangeOnly physical properties changeWhen matter is changed from one type of matter into another type, that has different properties.Atoms ARE rearrangedBOTH physical and chemical properties are changed