If 3 is an element of A and 3 is not an element of B, then which of the following is NOT true? a. 3 is an element of B complement b. 3 is an element of A union B c. 3 is an element of A intersect B If the set S
whereas a compound is a substance formed by the chemical bonding of more than one type of element that exists in a fixed proportion. Molecular compounds and ionic compounds differ in the types of bonds each contain.
The atoms of a molecule are held together by chemical forces. The atoms in the molecule may be identical as single atom O 2 , H 2 , S 2 , and S 8 , or different atoms as in CO 2 and H 2 O. A molecule is the smallest quantity of an element or compound, which can exist by...
3. Is CO₂ a molecule or a compound? CO₂ (carbon dioxide) is both a molecule and a compound because it has two different elements (carbon and oxygen) chemically bonded. 4. Why are all molecules not compounds? Because molecules can also consist of atoms of the same element (like O...
The key difference between element and molecule is that elements are pure substances that consist of only a single type of atom, and cannot be broken down
molecule 1. Chemistry, Physics. the smallest physical unit of an element or compound, consisting of one or more like atoms in an element and two or more different atoms in a compound.2. Chemistry. a quantity of a substance, the weight of which, measured in any chosen unit, ...
1. (physics and chemistry) the simplest structural unit of an element or compound 2. (nontechnical usage) a tiny piece of anything 同义词辨析 molecule, atom, particle, speck, grain 这些名词均有"粒,微粒"之意。 molecule: 指物质中保持原物质的一切化学性质,能独立存在的最小微粒,即分子。
Molecule definition: the smallest physical unit of an element or compound, consisting of one or more like atoms in an element and two or more different atoms in a compound.. See examples of MOLECULE used in a sentence.
atom系一种element入面最细而且不能分割的部份,而Ion是由于atom/molecule得到或者失去electron时而令atom/molecule中的正负电荷失衡,得到净正或负电荷,咁ion都系element入面最细而且不能分割的部份?polyatomic ion系多过一个 atom 的 ion,咁他算不算系compound?
Our lab has identified a small molecule compound that interacts with the specifier loop , selectively kills gram positive bacteria and is non-toxic to human cells. We have also characterized the Mg-dependent interaction between tRNAand the 5' UTR T-box element using gel shift assays and ...