<human>:  I need help understanding why some chemical compounds are toxic while others are not.
<bot>: To understand why certain chemical compounds are toxic and others are not, it is important to consider what components and properties the chemicals possess. Toxic substances often contain compounds that can be harmful to humans when ingested, inhaled, or come in contact with the skin. These toxins can affect various parts of the body and lead to adverse health effects. On the other hand, some chemical compounds may not have these properties and so may not be considered toxic. Additionally, other factors such as the amount of exposure, individual genetics, and other environmental conditions can play a role in whether or not a chemical is toxic.