Question

1. when elements combine to make a compound the new substance has properties ____ from the original. they may have a new ____

Explanation:

The question is about chemical compounds. When elements combine to form a compound, the new substance has properties different from the original elements, and they may have a new set of properties (or "properties" in the blank, but more accurately, the first blank is "different" and the second could be "properties" or related, but based on chemistry knowledge, when elements form a compound, the compound's properties are different from the elements, and the compound has new properties. So the first blank: "different", second: "properties" (or contextually, the first part: "When elements combine to make a compound, the new substance has properties different from the original. They may have a new properties (or more precisely, "set of properties" but likely "properties" or "characteristic"). But the key chemistry concept is that compounds have different properties than their constituent elements and new properties.

Answer:

First blank: different; Second blank: properties (or other context - appropriate term related to compound properties, but based on standard chemistry, the first is "different" and the second is "properties" or similar to describe the new characteristics of the compound)