英文化学题(+100分）1：How do homogeneous mixtures differ from hetero

1.A homogeneous mixture is a mixture in which all particles are uniformly distributed.heterogeneous mixtures is a mixture in which all particles are not uniformly distributed.NaCl fits into the homogeneous group because on the microscopic level (i.e.:looking at salt at the crystal structure level),we see that the arrange is uniform,that is,it repeats in a pattern in an infinite direction.At the macroscopic level (i.e.:using the naked eye),just having a bowl of salt on the table,you can see that the salt is the same throughout the bowl,that is,it is uniform.
2.atoms has neutral charge because atoms has the same amount of protons (positive charge) and electrons (negative charge).The positive and negative charges therefore cancel each other out perfectly.
3.Numbers of neutrons.because the Atomic mass is determined by the Atomic number plus the number of neutrons.
A= Z + N,where N is the number of neutrons
where A is the Atomic Mass
where Z is the Atomic number (number of proton)
for example-hydrogen have 1 proton and its atomic number is also 1
number of neutrons+number of protons=atomic mass
for example-hydrogen have 1 proton and 1 electron
so atomic mass of hydrogen is 1+1=2

化学盲飘过。
友情贡献：
1 如何将均相混合物与非均相混合物区别开？食用盐（氯化钠）符合哪一种特征？为什么。
2 原子的带电性是正，负，还是中性？请解释。
3 已知一个元素的原子质量和原子序数，还能求出什么？举出一个例子来阐述你的观点。
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