【题目】Atoms are building materials ofall matter, because by putting together atoms in different ways, all elements and compoundscan be formed .An element is a substance or a kind of thing that has only one type
首先句子后面是作定语的,由主句可以知道,修饰的是主语element.因为atoms是原子的意思,对于元素来说,逻辑关系自然是“元素里的原子”,所以element和atoms具有从属关系,用whose(注意啦!在定语从句表示从属关系的时候,关系词whose不仅仅适用于人,也可以适用于物) 分析总结。 因为atoms是原子的意思对于元素来说逻辑关系自然...
The simplest unit of an element is known as the atom while the simplest unit of a compound can be a molecule or formula unit. Answer and Explanation: The number of protons is the same for all atoms of an element. For neutral atoms, the number of...
all atoms of this element contain 38 protons. this element contains 227 protons and neutrons.elements that are gases at room temperature are likely to be classified asmetalsnonmetalsmetalloidunreactivethis is a noble gas found in period 2.which property of aluminum makes it a suitable metal for...
Let R be an integral domain. A nonzero, nonunit element r of R is called an atom (or irreducible) if r=st implies that s or t is a unit. R is said to be an atomic domain if every nonzero element is a product of atoms. Atomic domains with a finite number of atoms are called...
The 226 neutrons in radium (镭)-226 make this atom glow in the dark.Because they are made of smaller parts,atoms can be broken up into pieces. Once that happens, though, the pieces are no longer a part of one chemical element. Break up a carbon atom, and you no longer have carbon...
hydrogen has only 1 proton.So this means thatit has an atomic number of 1.It is the first element on the periodictable of elements.Helium is the second element.It has an atomicnumber of 2.This means that it has 2 protons in its nucleus.There are more than 100 different elements....
Chemistry The structure of the atom. The Atomic Theory: All matter is made of atoms, which are particles too small to be seen. Each element has its own kind of atom. The evolution of the atomic Theory: 1.Dalton 2.Rutherford’s gold foil experiment 3.Bohr models 4.Quantum Mechanics All...
e. all are equally polar Bond Polarity: Covalent bonds are formed when one atom of an element shares one or more of its valence electrons with another atom. The covalent bond might be non-polar or polar depending on the relative electronegativity...
of atoms are closer to each other after 1000 ps compared to the beginning of the dynamics (1 ps) because of interaction, which facilitates the stable formation of the polymer interface and provides a suitable distance for hydrogen bonds. Calculated by MD simulation, the energy of such ...