化学性质是初三化学的一个重要概念,它是指物质在化学变化中表现出来的性质.化学性质是物质本身所具有的属性,是物质发生化学变化的前提,其在很大程度上决定了物质的用途.物质的可燃性、助燃性、活泼性、稳定性、氧化性、还原性、毒性、酸性、碱性,或能与氢气、氧气、水、金属、非金属、氧化物、酸、碱、盐等发生化学反应时表现出来的性质都属于化学性质,而物质的颜色、状态、形状改变、颗粒大小、光泽、气味、硬度、密度、 Chemistry is an important concept of the third chemical, which refers to the nature of the material in the chemical changes shown in the chemical properties of the material itself has the property, chemical changes in the material is the premise, which largely determines The use of the substance. Flammability, combustion-supporting, liveliness, stability, oxidation, reduction, toxicity, acidity, alkalinity or with hydrogen, oxygen, water, metals, nonmetal, oxides, acids, Alkali, salt and other chemical reactions appear in the nature of the chemical properties are, while the material color, state, shape change, particle size, gloss, smell, hardness, density,