Question

15 multiple choice 1 point
luster describes ____ and malleability describes ____.
○ shininess, moldability
○ heat exchange, hardness
○ hardness, heat exchange
○ moldability, shininess
clear my selection

16 multiple choice 1 point
when a neutral atom gains or loses an electron, there is a change in...
○ bonding atomic radius.
○ nonbonding radius.
○ electron radius.
○ ion radius.
clear my selection

17 multiple choice 1 point
another term for energy levels is...
○ spaces.
○ shells.

Explanation:

Question 15

Luster in chemistry (a subfield of Natural Science) refers to the shininess of a material. Malleability refers to the ability of a material to be molded or shaped (moldability). So the first blank is shininess, the second is moldability.

When a neutral atom gains or loses an electron, it becomes an ion. The radius of this ion (ion radius) changes. Bonding/nonbonding atomic radii relate to atoms in bonding/non - bonding states, and "electron radius" is not a standard term here.

In atomic structure (chemistry, Natural Science), energy levels of electrons are also called electron shells. "Spaces" is not the correct term.

Answer:

A. shininess, moldability

Question 16