Question

examine the following data table:

	density	color	mass	melting point
liquid 2	0.79 g/cm³	no color	38 g	26 °c
liquid 3	13.6 g/cm³	silver	21 g	-39 °c
liquid 4	0.93 g/cm³	no color	16 g	-98 °c

12a. question: are any of the liquids the same substance?
directions: use the information in the data table to develop a claim that answers the question. use a complete sentence.
claim:

Explanation:

To determine if liquids are the same substance, we check intensive properties (density, melting point, color) as they don't depend on amount. Liquid 1 and Liquid 4 have the same density ($0.93\ \text{g/cm}^3$), same color (no color), and same melting point ($-98\ ^\circ\text{C}$), while their masses differ (extensive property, which doesn't define substance identity). So they likely are the same substance.

Answer:

Liquid 1 and Liquid 4 are the same substance.