Which statement about metals and nonmetals is correct?(1 point)
Responses
Metals and nonmetals can both be found in any column of the periodic table.
Most metals are a solid under normal conditions, and most nonmetals are a liquid.
Metals can be hammered into thin sheets, and nonmetals are brittle.
Metals tend to be poor conductors of electricity, while nonmetals are strong conductors of electricity.
The correct statement is:
Metals can be hammered into thin sheets, and nonmetals are brittle.
Explanation:
- Metals are generally malleable and can be hammered or rolled into thin sheets. Nonmetals, on the other hand, are typically brittle and will shatter rather than deform when subjected to force.
- Most metals are solid at room temperature, with the exception of mercury, which is a liquid. Nonmetals can be gases (like oxygen and nitrogen), solids (like carbon and sulfur), or liquids (bromine is the only liquid nonmetal under standard conditions).
- Metals are good conductors of electricity and heat, whereas nonmetals are generally poor conductors of electricity (with the exception of graphite, which is a form of carbon).
- Metals and nonmetals are not found in every column of the periodic table; metals are primarily located on the left side and center of the periodic table, while nonmetals are found on the right side, with metalloids (elements with properties intermediate between metals and nonmetals) along the "stair-step" line separating metals from nonmetals.
Based on properties of elements in the periodic table, which element is the best conductor of thermal energy?
(1 point)
Responses
argon (Ar)
polonium (Po)
vanadium (V)
germanium (Ge)
Among the options provided, vanadium (V) is the best conductor of thermal energy.
Explanation:
- Argon (Ar) is a noble gas and as such, it is a poor conductor of thermal energy.
- Polonium (Po) is a metalloid and, while it can conduct heat, it does not do so as efficiently as most metals.
- Germanium (Ge) is also a metalloid with characteristics between metals and nonmetals, and it is not as good a conductor of heat as most metals.
- Vanadium (V) is a transition metal and metals are typically very good conductors of heat and electricity. Therefore, vanadium would be a better conductor of thermal energy than argon, polonium, or germanium.
what is the correct answer
The correct answer is vanadium (V). It is a transition metal, and metals are generally the best conductors of thermal energy. Vanadium, therefore, would be a better conductor of thermal energy than argon (Ar), which is a noble gas and poor conductor; polonium (Po), which is a metalloid but not as conductive as most metals; and germanium (Ge), which is also a metalloid with lower thermal conductivity compared to metals.
The correct statement about metals and nonmetals is:
Metals can be hammered into thin sheets, and nonmetals are brittle.
This is because metals are malleable, which means they can be hammered into thin sheets or shaped without breaking. On the other hand, nonmetals are generally brittle, which means they are easily broken or shattered when force is applied.