We know that are not all chemicals are dangerous to human being, some are need by our body but in a small amount like, Iron, Zinc, Calcium, Natrium and many others. Our body also are accumulate of many chemical in certain composition. If the composition of certain chemical out of order can be said as abnormal condition and can make our body feel not good, even poisonous.
Many chemicals also dangerous to our body because have poisonous properties and if available to our body can make poisonous and even died.
- Corrosive
- Reactive
- Explosive
- Irritative
- Radioactive
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