Which one of the following statements is false ?

Options

A. An element of a substance contains only one kind of atoms
B. Milk is a homogenous mixture
C. A compound can be decomposed into its constituents
D. All homogenous mixtures are called solutions

Answer

To determine which statement is false, let's analyze each statement one by one.

### Step 1: Analyze the first statement
**Statement:** An element is a substance which contains only one kind of atom.
**Analysis:** This statement is true. An element is defined as a pure substance that cannot be broken down into simpler substances by chemical means, and it consists of only one type of atom.

**Hint:** Remember that elements are pure substances made up of only one type of atom.

### Step 2: Analyze the second statement
**Statement:** Milk is a homogeneous mixture.
**Analysis:** This statement is false. Milk is actually a heterogeneous mixture because it contains fat, proteins, and carbohydrates that do not uniformly mix. When milk is left to stand or heated, the fat can separate and rise to the top, demonstrating its heterogeneous nature.

**Hint:** Consider how components in a mixture behave when left undisturbed or heated.

### Step 3: Analyze the third statement
**Statement:** A compound can be decomposed into its constituents.
**Analysis:** This statement is true. Compounds are substances formed from two or more elements that are chemically bonded. They can be broken down into their constituent elements through chemical reactions. For example, water (H2O) can be decomposed into hydrogen (H2) and oxygen (O2).

**Hint:** Think about chemical reactions that can break compounds into simpler substances.

### Step 4: Analyze the fourth statement
**Statement:** All homogeneous mixtures are called solutions.
**Analysis:** This statement is true. A solution is a specific type of homogeneous mixture where one substance (solute) is dissolved in another (solvent). For example, when sugar is dissolved in water, it forms a solution.

**Hint:** Recall the definition of solutions and their characteristics.

### Conclusion
After analyzing all the statements, the false statement is the second one: "Milk is a homogeneous mixture."

### Final Answer
The false statement is: **Milk is a homogeneous mixture.**