Question

5 what makes atoms of the same element similar? a their temperature only b their mass and properties c their size only d their color only

Explanation:

Atoms of the same element have the same number of protons. This leads to having similar mass (since protons contribute to mass) and chemical properties (as the number of protons determines the element's identity which in turn affects its chemical behavior). Temperature (A) is an external condition, size (C) can vary in some cases (like isotopes which are still the same element despite slight size differences due to different neutrons), and color (D) is not a fundamental property that defines an element at the atomic level for similarity.

Answer:

B. Their mass and properties