What best describes the states of nonmetals when they are at room temperature?
Most nonmetals are gaseous, but some are liquid or solid
. Where are alkaline earth metals found on the periodic table?
What word best describes nonmetals?
- High electronegativities.
- Poor thermal conductors.
- Poor electrical conductors.
- Brittle solids—not malleable or ductile.
- Little or no metallic luster.
- Gain electrons easily.
- Dull, not metallic-shiny, although they may be colorful.
- Lower melting points and boiling point than the metals.
What best describes the states of nonmetals when they are at room temperature Most nonmetals are gases but some are liquid or solid all nonmetals are gases unless they bond with a metal most nonmetals are solids but some are gaseous or liquid all nonmetals are solid Unless?
The statement that gives exact description about the states of non-metals is: ‘A’ which states that Most nonmetals are gaseous, but some are liquid or solid. The elements present in the periodic table are classified as metals, non metals and metalloids.
Which important change in electronic devices such as televisions and computers is a result of the use of metalloids as semiconductors?
Which important change in electronic devices, such as televisions and computers, is a result of the use of metalloids as semiconductors?
Electronic devices have become smaller
. This is how manganese appears in the periodic table.
Which metal is most likely to carry electric current easily?
Electric Conductivity
Most metals conduct electricity to a certain extent. Some metals are more highly conductive than others.
Copper, silver, aluminum, gold
, steel, and brass are common conductors of electricity. The most highly conductive metals are silver, copper, and gold.
What best describes the state of nonmetals when they are at room temp?
What best describes the states of nonmetals when they are at room temperature?
Most nonmetals are gaseous
, but some are liquid or solid.
Is shiny a metal or nonmetal?
| Metals Non-metals | Appearance Shiny Dull | State at room temperature Solid (except mercury, which is a liquid) About half are solids, about half are gases, and one (bromine) is a liquid | Density High (they feel heavy for their size) Low (they feel light for their size) | Strength Strong Weak |
|---|
What are the 22 nonmetals?
- Hydrogen (sometimes)
- Carbon.
- Nitrogen.
- Oxygen.
- Phosphorus.
- Sulfur.
- Selenium.
- Fluorine.
What are nonmetals give two examples?
What are examples of non-metals?
Hydrogen, hydrogen, chlorine, fluorine, carbon, nitrogen, arsenic, phosphorus, selenium
are examples of non-metal.
What is difference between metal and nonmetal?
| Metals Non-Metals | Metals usually do not combine with hydrogen. Only a few reactive metals combine with hydrogen to form ionic metal hydrides. Non- metals react with hydrogen to form stable, covalent hydrides. |
|---|
Which metal is most likely to form a positive ion?
Positive ions are cations and are typically metals like
copper or sodium
. Negatively-charged ions are anions, formed from nonmetallic elements like oxygen and sulfur.
Which metal is most likely to form more than one kind of positively?
Most
transition metals
differ from the metals of Groups 1, 2, and 13 in that they are capable of forming more than one cation with different ionic charges. As an example, iron commonly forms two different ions.
Which is the best conclusion about particles A and B?
Both particles are in the same atom. Which is the best conclusion about Particles A and B?
Particle A orbits the nucleus, and Particle B is located in the nucleus.
What are 5 good conductors?
- Silver.
- Gold.
- Copper.
- Aluminum.
- Mercury.
- Steel.
- Iron.
- Seawater.
Which metal is the best conductor of electricity?
- Silver. The best conductor of electricity is pure silver, but to no surprise, it is not one of the most commonly used metals to conduct electricity. …
- Copper. One of the most commonly used metals to conduct electricity is copper. …
- Aluminum.
Is Diamond a good conductor of electricity?
In a graphite molecule, one valence electron of each carbon atom remains free, Thus making graphite a good conductor of electricity. Whereas in diamond, they have no free mobile electron. Hence there won’t be flow of electrons That is the reason behind
diamond are bad conductor electricity
.
