To determine which of the given options is an example of a mixture, we need to understand the difference between pure substances and mixtures.
- Pure substances: These consist of only one type of element or compound. They have definite chemical and physical properties.
- Mixtures: These consist of two or more different substances that are physically combined, but not chemically bonded, and can be separated by physical means.
Let's analyze each option:
- Option A: NaCl (Sodium Chloride)
Sodium Chloride is a compound made of sodium (Na) and chlorine (Cl) chemically bonded together. It is a pure substance.
- Option B: [tex]$CO_2 + H_2 + O_2$[/tex]
Here, we have carbon dioxide (CO_2), hydrogen (H_2), and oxygen (O_2) mixed together. These components are physically combined but not chemically bonded together, which fits the definition of a mixture.
- Option C: Ca (Calcium)
Calcium is a pure element, consisting of only calcium atoms. It is a pure substance.
- Option D: C_6H_{12}O_6 (Glucose)
Glucose is a compound consisting of carbon, hydrogen, and oxygen atoms chemically bonded together. It is a pure substance.
From our analysis, we can see that:
- Option A is a pure substance
- Option C is a pure substance
- Option D is a pure substance
- Option B represents a mixture of different elements and compounds
Therefore, the correct answer is:
Option B: [tex]$CO_2 + H_2 + O_2$[/tex]
This is the example of a mixture among the given options.
