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change in one or more physical properties of a substance
physical change
after this type of change, the substance may look different but the molecules are still the same
physical change
freezing, boiling water, melting an ice cube are examples of which type of change
physical change
one or more substances are changed into a new substance with new properties
chemical change
chemical changes can never be _________.
undone
color change, foaming, producing heat, producing color, causing fizzing, producing light are all clue that a _____ change has occurred
chemical
slicing a pizza
physical
breaking a crayon
physical
melting butter
physical
freezing water
physical
ironing a shirt
physical
rusting fence
chemical
baking cookies
chemical
milk going sour
chemical
cheese molding
chemical
toasting bread
chemical
