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Physical and Chemical changes BY: Zakaria Hashi Objective/Vocabulary • Today you will tell the difference between physical and chemical changes. • You will be able to state all states of matter. • Matter, Mass, Physical change, Chemical change, solid, liquid, Gas, Plasma and molecules. States of matter • Solid: Structural firm and resistance to changes of shape or volume. Ex: Table & Rocks • Liquid: A liquid is made up of tiny vibrating particles of matter, such as atoms. Ex: Water & Milk • Gas: Consisting of particles that have neither a defined volume nor defined shape. ( No boundaries) Ex: Nitrogen & oxygen Physical change • Physical change is a change in which the substance changes form but keeps its same chemical composition (reversible). • Examples: Ice melting & Boiling water. Chemical change • A chemical change is a change in which something new is formed (irreversible). • Examples: Bleaching your hair. Firework exploding. Examples • Rusting metal. • Frying egg. • Mixing lemonade powder in water. • Melting ice cream. Bibliograpghy •Chemistry textbook •Google images