Question

question 7 10 pts
two elements (a and b) are combined in two different ways to form two different substances, x and y. the resulting substances have the characteristics shown in the table.
substance x | substance y
a and b retain their individual properties | a and b lose their individual properties
what can be concluded from the table?

• substance x is a compound, and substance y is a mixture.
• substances x and y are mixtures.
• substance x is a mixture, and substance y is a compound.
• substances x and y are compounds.

Explanation:

To solve this, we recall: A compound has a fixed composition and distinct properties from its elements. A mixture retains the properties of its components.

• Substance X: A and B form it with new properties → compound (since elements combine to form a compound with unique properties).
• Substance Y: A and B retain their properties → mixture (components in a mixture keep their original properties).

So the first option ("Substance X is a compound, and Substance Y is a mixture") is correct.

Answer:

Substance X is a compound, and Substance Y is a mixture.