Question

question 1 match the following terms and definitions... a substance that has the characteristic properties of a metal and contains more than one element. choose a substance composed of two or more elements united chemically in definite proportions. choose a substance that cannot be separated into simpler substances by chemical means. choose a combination of two or more substances in which each substance retains its own chemical identity. choose

Explanation:

To solve this matching problem, we recall the definitions of key chemical terms:

1. "A substance that has the characteristic properties of a metal and contains more than one element."

This describes an alloy (a mixture of metals or a metal and other elements with metallic properties).

1. "A substance composed of two or more elements united chemically in definite proportions."

This is the definition of a compound (elements bonded in fixed ratios, e.g., \( \text{H}_2\text{O} \)).

1. "A substance that cannot be separated into simpler substances by chemical means."

This defines an element (pure substances like \( \text{O} \), \( \text{Fe} \), etc.).

1. "A combination of two or more substances in which each substance retains its own chemical identity."

This is a mixture (no chemical bonding, e.g., salt water).

Matching:

• "A substance that has the characteristic properties of a metal and contains more than one element." → Alloy
• "A substance composed of two or more elements united chemically in definite proportions." → Compound
• "A substance that cannot be separated into simpler substances by chemical means." → Element
• "A combination of two or more substances in which each substance retains its own chemical identity." → Mixture

(Note: If the dropdown options include these terms, select them accordingly. The above are the correct matches based on chemical definitions.)

Answer:

To solve this matching problem, we recall the definitions of key chemical terms:

1. "A substance that has the characteristic properties of a metal and contains more than one element."

This describes an alloy (a mixture of metals or a metal and other elements with metallic properties).

1. "A substance composed of two or more elements united chemically in definite proportions."

This is the definition of a compound (elements bonded in fixed ratios, e.g., \( \text{H}_2\text{O} \)).

1. "A substance that cannot be separated into simpler substances by chemical means."

This defines an element (pure substances like \( \text{O} \), \( \text{Fe} \), etc.).

1. "A combination of two or more substances in which each substance retains its own chemical identity."

This is a mixture (no chemical bonding, e.g., salt water).

Matching:

• "A substance that has the characteristic properties of a metal and contains more than one element." → Alloy
• "A substance composed of two or more elements united chemically in definite proportions." → Compound
• "A substance that cannot be separated into simpler substances by chemical means." → Element
• "A combination of two or more substances in which each substance retains its own chemical identity." → Mixture

(Note: If the dropdown options include these terms, select them accordingly. The above are the correct matches based on chemical definitions.)