Presentation on theme: "Physical or Chemical?. Physical Chemical huevos de craqueomashmallows asar."— Presentation transcript:
Physical or Chemical?
Physical Chemical huevos de craqueomashmallows asar
Physical or Chemical? Physical Chemical cristales rotosencender un fósforo
Physical or Chemical? Chemical Physical digestión de los alimentos cortar el césped
Physical or Chemical? Chemical fuegos artificiales hornear un pastel
Physical or Chemical? Physical Chemical fusión del hieloclavos oxidados
Physical or Chemical? Chemical
WHY? Frying an egg= it denatures the protein in the egg – the reaction is NOT reversible Toast= the bread turns brown & the texture changes, and odor is produced
Physical or Chemical? Physical agua hirviendo limonada fresca
WHY? Fresh lemonade= it would be a physical change because the sugars are still comprised in the same way just now its extracted liquids.
PHYSICAL CHANGE Change in which the appearance of a substance changes, but chemically the substance is the same – Ex: Phase changes in water Melting Boiling Evaporating – Atoms DO NOT rearrange – Only physical properties change When matter is changed from one type of matter into another type, that has different properties. – Atoms ARE rearranged – BOTH physical and chemical properties are changed Physical or Chemical? CHEMICAL CHANGE