Which element is a poor conductor?
Which element is a poor conductor?
A nonmetal is an element that is a poor conductor (insulator) of heat and electricity. At room temperature, some are gases, like oxygen, chlorine, and nitrogen, and one is a liquid, bromine. Solid nonmetals, like carbon, sulfur, and phosphorus are not malleable nor ductile, but instead are brittle and break easily.
What causes elements to react with other elements?
All elements, apart from the noble gases, are chemically reactive, because they are more stable electronically when they share electrons with other atoms. When this happens, the outer shell of electrons in each atom forms a magic number.
How can you tell which element is more reactive?
The number of electrons in the outermost shell of an atom determines its reactivity. Noble gases have low reactivity because they have full electron shells. Halogens are highly reactive because they readily gain an electron to fill their outermost shell.
What would happen if elements do not react with each other?
Carbon and oxygen would yield carbon monoxide and carbon dioxide. Nitrogen gas is very stable, and would remain as is. The noble gases wouldn’t react, nor would a few of the metals, like gold and platinum, which are mostly found in their pure forms. The things that do react will form rust and salts.
Which combination is an element How do you know?
Answer: The combination in cell A (the two ovals) is an element. Two atoms of the same kind combine through a chemical bond.
What do we get when two or more elements are combined?
When two or more elements combine to form a new substance, it is called a compound. There are many different types of compounds, because atoms of elements combine in many different ways to form different compounds. Examples include water (H2O) and table salt (NaCl). The smallest part of a compound is a molecule.
What is the similarities of elements and compounds?
On first glance, elements and compounds might appear different, yet they share many similarities, like being made up of atoms and having bonds linking their atoms together. Elements and compounds also share the qualities of being both pure and homogeneous substances.
What is an element Class 9?
Elements are complete chemical substances which relate to a single entry in the modern periodic table. Elements consist of one kind of atoms only. They cannot be broken down into simpler fragments and can exist as atoms or as molecules.
What are the 10 elements?
Terms in this set (10)
- Hydrogen. H.
- Helium. He.
- Lithium. Li.
- Beryllium. Be.
- Boron. B.
- Carbon. C.
- Nitrogen. N.
- Oxygen. O.
Why does light as a feather stiff as a board work?
Of course, “Light as a Feather, Stiff as a Board” isn’t true levitation: it’s simple physics. The lift doesn’t work on the first try because everyone is giggling and uncoordinated; it only works when each member of the group is lifting at the exact same time, distributing the weight equally.
Who has teeth but Cannot bite?
What has teeth but can’t bite? A comb. Other inanimate objects with teeth like a saw, zipper or a gear can “bite” you.