Question

1. drag and drop the terms with the definitions. anything that has mass and takes up space the smallest unit of an element that maintains all of the chemical properties of that element a form of matter with a uniform composition and specific properties the smallest unit of matter that retains the physical and chemical properties of that substance a pure substance made up of two or more different elements chemically combined in definite proportions choices: matter, atom, compound, element, pure substance

Explanation:

1. Matter is defined as anything that has mass and takes up space.
2. An atom is the smallest unit of an element that maintains all of the chemical properties of that element.
3. A pure - substance has a uniform composition and specific properties.
4. A molecule is the smallest unit of matter that retains the physical and chemical properties of that substance (though not given as an option, if we assume the closest is the concept related to the property - retaining unit, it's related to the general idea). Here we'll use the closest option which is related to the basic unit of matter in the given choices.
5. A compound is a pure substance made up of two or more different elements chemically combined in definite proportions.

Answer:

1. matter
2. atom
3. pure substance
4. atom (closest in the given options to the concept of the smallest unit of matter with properties)
5. compound