Naturally occurring matter are physical mixtures of compounds. if you add 2 or more substance they become a mixture in the atmosphere

Types of Mixtures

• The first type of mixture is heterogenous mixture and the second type of mixture is homogeneous

• Heterogenous mixture is a mixture of 2 or more solutions , like oil and water is a heterogenous mixture , water and bromine liquid and etcetera

• Homogenous mixture is a mixture which contain only one solution like salt water , water , sweet water and etcetera

• All of these could be within liquid , solid or gas

Concentration

• Concentration refers to the amount of a substance in a defined space. Example 👇

As you can see there are 2 container here A and B , both contain salt

• A contains more salt than b cause it is shaded more thus we call it more concentrated that the other , B is more concentrated than the other

• A which is less concentrated is called dilute , so we can say beaker a has less concentration than beaker B

• The formula for concentration is , Mass of solute / Mass of solution into 100

• The second way to describe concentrated is to calculate the percentage of mass / volume