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20 questions
sharpening a pencil
physical change
physical property
chemical change
chemical property
flammability of a substance
physical change
physical property
chemical change
chemical property
size of an object
physical change
physical property
chemical change
chemical property
inflating a tire
physical change
physical property
chemical change
chemical property
freezing point
physical change
physical property
chemical change
chemical property
drawing copper into a wire
physical change
physical property
chemical change
chemical property
corrosion of a bicycle frame
physical change
physical property
chemical change
chemical property
fragrance of a flower
physical change
physical property
chemical change
chemical property
formation of water when hydrogen burns
physical change
physical property
chemical change
chemical property
boiling water
physical change
physical property
chemical change
chemical property
a burning candle
physical change
physical property
chemical change
chemical property
oranges squeezed to make orange juice
physical change
physical property
chemical change
chemical property
a change in size, shape, or state of matter
physical change
physical property
chemical change
chemical property
a characteristic that indicates whether a substance can change to another substance
physical change
physical property
chemical change
chemical property
a change of one substance to another
physical change
physical property
chemical change
chemical property
a characteristic that can be observed without changing the substance
physical change
physical property
chemical change
chemical property
boiling an egg
physical change
physical property
chemical change
chemical property
milk going sour
physical change
physical property
chemical change
chemical property
density
physical change
physical property
chemical change
chemical property
sugar dissolving in water
physical change
physical property
chemical change
chemical property
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