Guangdong and Shanghai Version Eighth 5.1 "Quality of Objects" ppt The amount of substances contained in an object is called mass. Observation teacher demonstrates: Will the spherical plasticine be pressed into a cake shape, does the quality change? The quality of an object does not change because of its ______, _______ and _____ changes. Kilogram (kg) Ton (t) Gram (g) Milligram (mg)
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