Knowledge of Chemical Properties

Chemical and physical properties are the characteristics of a substance and can be used to help identify and describe it. Chemical properties refer to the properties that can be observed only when a substance has chemical changes or chemical reactions. In other words, to observe and measure the chemical properties of the sample, you need to change the chemical properties of the sample.

1. Why is it important to know the chemical properties of the sample?

It is important to know the chemical properties of the sample because this information can be used to:

Classify it

Identify unknown samples

Purify

Separate it from other substances

Predict its behavior

Predict its use

Let’s take a closer look at some examples of chemical properties.

2. Toxicity is a chemical property

Toxicity is an example of chemical properties. Toxicity refers to the degree to which a chemical is dangerous to your health, specific organs, other organisms, or the environment. You can’t judge whether a chemical is poisonous by observing it. The toxicity of a substance depends on the environment, so this property can only be observed and measured by exposing the organic system to the sample. Exposure can cause chemical reactions or a series of reactions. The result of chemical changes is toxicity.

3. Flammability as a chemical property

Flammability is an index to measure the duration of sample ignition or combustion reaction. You don’t know how easy it is to burn something until you try to ignite it, so flammability is an example of a chemical property.

Flammable and combustible

4. Chemical stability

Chemical stability is also called thermodynamic stability. It occurs when a substance is in chemical equilibrium in its environment, which is its lowest energy state. This is a characteristic of a substance, which is determined by its specific conditions, so it cannot be observed without exposing the sample to this condition. Therefore, chemical stability conforms to the definition of chemical properties of substances.

Chemical stability is related to chemical reactivity. Chemical stability refers to a specific environment, while reactivity refers to the possibility of a sample participating in a chemical reaction under various conditions and the speed of the reaction.

5. Oxidation state or oxidation number

Each element has a set of preferred oxidation states or oxidation values. It is a measure of the electron loss or oxidation of atoms in a compound. Although integers (for example, — 1,0,2) are used to describe the oxidation state, the real oxidation level is much more complex. Because only when an element participates in a chemical reaction to form a chemical bond, oxidation can be known, which is a chemical property.

6. More examples of chemical properties

The matter has many chemical properties. In addition to toxicity, flammability, chemical stability, and oxidation state, other chemical properties include:

Enthalpy of formation

Heat of combustion

Electronegativity

Coordination number

Solubility

Acid/alkaline

Ionization degree

A chemical property is a property that can only be observed in chemical reactions.

Article source: https://article-realm.com/article/Sports-Recreation/16603-Knowledge-of-Chemical-Properties.html