Question

1. an element is a building block of choose an answer . the elements are listed choose an answer and grouped according to shared properties. atomic mass refers to the choose an answer of matter in one atom of an element.

Explanation:

To solve this, we analyze each blank based on chemistry (a subfield of Natural Science) concepts:

First Blank:

Elements are the building blocks of matter (or "compounds" could also fit, but "matter" is more fundamental here as elements make up all matter). In chemistry, elements combine to form all types of matter (compounds, mixtures, etc.).

Second Blank:

Elements are listed in the periodic table and grouped by shared properties (like periodic trends, groups/families, periods). The periodic table organizes elements by atomic number, with similar properties in groups.

Third Blank:

Atomic mass refers to the amount (or "quantity", more precisely "mass") of matter in one atom of an element. It’s the sum of protons, neutrons, and (negligible) electrons’ mass, measured in atomic mass units (amu).

If we assume standard answer choices (common in chemistry curricula):

• First blank: matter (or compounds, but matter is broader)
• Second blank: in the periodic table (or systematically)
• Third blank: mass (or amount)

For example, with typical dropdown options:

1. First blank: matter (elements are building blocks of all matter)
2. Second blank: in the periodic table (elements are organized here by properties)
3. Third blank: mass (atomic mass = mass of one atom)

• First: Elements compose all matter (e.g., O₂, H₂O, metals).
• Second: The periodic table lists elements (by atomic number) and groups them (e.g., noble gases, halogens) by shared properties.
• Third: Atomic mass measures the total mass of one atom (protons + neutrons + electrons’ mass).

Answer:

(for typical options):
First blank: matter
Second blank: in the periodic table
Third blank: mass