To simplify the expression \( 2^3 \cdot 2 \), we can use the properties of exponents.
The property states that when multiplying two powers with the same base, you can add the exponents:
\[ a^m \cdot a^n = a^{m+n} \]
In this case, we have:
\[ 2^3 \cdot 2^1 = 2^{3+1} = 2^4 \]
So, the simplified expression is:
\[ 2^4 \]