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A compound can consist of one element?
False. A compound by definition is a substance made up of two or more different elements chemically bonded together. An element, on the other hand, is a pure substance made up of only one type of atom.
Why is NH3 a compound?
NH3 is a compound because it is composed of different elements (nitrogen and hydrogen) chemically bonded together in a fixed ratio. It has a distinct chemical formula and structure, and its properties differ from those of its individual elements.
How does photolysis work?
Photolysis is a chemical reaction in which a compound is broken down by light energy. When a molecule absorbs light, it can become energetically unstable and undergo a chemical reaction that leads to its fragmentation into smaller molecules or atoms. This process is common in environmental processes such as the breakdown of pollutants by sunlight.
Which elements don't bond with other elements?
There are some elements that can't become a compound but can become a mixture. OK your question is not completely understood. A compound is made up of 2 or more elements that are chemically combined and can only be separated by chemical means. A compound is formed in a chemical reaction. A mixture is 2 or more substances (it doesn't have to be elements) that are phsically combined and can only be separated by physical means. So the answer to your question is not open because your question should be some thing like "Which element(s) does not actively combine with other elements in a compound or mixture?" The answer to that question would be many. Some elements can't come together to form a compound but they can form a mixture perfectly and visa versa.Ans 2. The above answerer has not fully understood the question. The word "combine" defines "a compound" and excludes "a mixture". The phrase "actively combine" refers to those elements which show no spontaneous inclination to combine with any other. These elements were long referred to as "inert", but the name has recently been changed to"noble gases". The reason for their dis-inclination to combine is that in every case the atom's outer electron shell is full; in other words their valency is zero.
What happens to oils when they undergo hydrogenation?
When oils undergo hydrogenation, they become more solid and have a higher melting point. This process changes their chemical structure by adding hydrogen atoms, making them more saturated.
Can compounds undergo chemical change to become elements?
Yes in the sense that you can have a compound and add a chemical or element to it in order to remove an atom from the compound, thus returning it to its elemental form. For example, KI + Li --> LiI + K. The Potassium (K) was in a compound but is now alone in its elemental form after the reaction. (Lithium can replace Potassium because it is more reactive. See the Activity Series for more info on that).
When two or more elements chemically combine?
If two elements are chemically combined, they become a compound which will have totally different chemical and physical characteristics than either of the two original elements.
Can compound s undergo chemical change to become elements?
Any compound can in some way be broken down into its elemental constituents (although they may spontaneously partially or entirely recombine afterwards). One method that will always do this is thermal decomposition, or thermolysis. In this chemical process the compound is simply heated to a high enough temperature that all the chemical bonds between the atom break. Another gentler method uses the techniques of chemical analysis, plus some additional steps to separate the elements of the original compound from the elements of the carrier compounds used to separate them from the original compound.
How does a chemical compound achieve electrical neutrality?
A compound achieves electrical neutrality when it is formed by the sharing of electrons, or the transfer of electrons. In either case, the atoms of the elements become electrically stable when they undergo chemical bonding by achieving a noble gas electron configuration (also commonly known as an octet, which is not accurate for hydrogen, lithium, or beryllium). Therefore the compound produced by this chemical bonding is also electrically neutral.
Can elements undergo chemical change become compounds?
Yes in the sense that you can have a compound and add a chemical or element to it in order to remove an atom from the compound, thus returning it to its elemental form. For example, KI + Li --> LiI + K. The Potassium (K) was in a compound but is now alone in its elemental form after the reaction. (Lithium can replace Potassium because it is more reactive. See the Activity Series for more info on that).
Why do sodium and chlorine have such different properties when they exist as elements from when they exist as the compound sodium chloride?
Sodium is a highly reactive metal, while chlorine is a toxic gas. When they combine to form sodium chloride, they undergo a chemical reaction that results in the formation of a stable ionic compound due to the transfer of electrons. This compound exhibits different properties compared to the individual elements.
What are two or more elements combined chemically called?
When two or more elements are combined chemically, they form a compound. This involves the elements bonding together through chemical reactions to create a new substance with its own unique properties.
What does compoud mean?
A compound is a substance composed of two or more elements chemically bonded together. It has a unique chemical structure and properties different from its constituent elements. Examples include water (H2O) and salt (NaCl).
What are reactants in a chemical reaction?
Reactants are the substances that are present at the beginning of a chemical reaction and undergo a transformation to form new products. They are the starting materials that are consumed during the reaction process.
A compound can consist of one element?
False. A compound by definition is a substance made up of two or more different elements chemically bonded together. An element, on the other hand, is a pure substance made up of only one type of atom.
How can elements be changed into compounds?
Elements become compounds after chemical reactions.
Are you able to have half an element in a compound?
No, because it is not possible to have half an element. Every atom is an element of some kind and if you split it in half or any other fraction it will become another element. Sometimes formulas are written as if there are half atoms or molecules but this is only because one of them is the important part. The calcium carbonate cement is composed of is one common example. It is often written as CaCO3.1/2 H2O because it is the calcium carbonate which is the important part. It really should be 2CaCO3.H2O
