Properties of Substances: Same or Different?

Substance 1 is shiny, silver-colored, and conducts electricity. Substance 2 is dull, brittle, and does not conduct electricity. Are they the same substance?

• Yes

• No

• Not enough information to tell

Substance 1 melts at 100°C and dissolves in water. Substance 2 also dissolves in water but melts at 150°C. Are they the same substance?

• Yes

• No

• Not enough information to tell

Substance 1 is a colorless liquid that boils at 78°C. Substance 2 is also a colorless liquid but boils at 100°C. Are they the same substance?

• Yes

• No

• Not enough information to tell

Substance 1 is a colorless liquid with no odor and boils at 100°C. Substance 2 is also a colorless, odorless liquid that boils at 100°C. Are they the same substance?

• Yes

• No

• Not enough information to tell

Substance 1 is a white, crystalline solid that dissolves in water and has a density of 2.1 g/cm³. Substance 2 is also a white, crystalline solid that dissolves in water and has the same density. Are they the same substance?

• Yes

• No

• Not enough information to tell

Substance 1 is a gas at room temperature and is odorless. Substance 2 is also a gas at room temperature but has a strong odor. Are they the same substance?

• Yes

• No

• Not enough information to tell

Substance 1 is a shiny, silver metal that conducts electricity and has a melting point of 1085°C. Substance 2 has the same appearance, conductivity, and melting point. Are they the same substance?

• Yes

• No

• Not enough information to tell

Substance 1 reacts with acid and produces bubbles. Substance 2 does not react with acid. Are they the same substance?

• Yes

• No

• Not enough information to tell

Substance 1 is a clear liquid with a density of 0.79 g/cm³ and a boiling point of 78°C. Substance 2 has the same appearance, density, and boiling point. Are they the same substance?

• Yes

• No

• Not enough information to tell

Substance 1 is a black, solid metal that rusts when exposed to oxygen. Substance 2 is also a black, solid metal but does not rust when exposed to oxygen. Are they the same substance?

• Yes

• No

• Not enough information to tell