可否翻译出原体,在给出英文答案?1.What is a proton,neutron,and electron?2.What is an element,mixture,molecule,and compound?3.What will determine if an object will float if is placed in a fluid?4.What is the unit of energy used in electricity bills?How many joules is this equal to?(Can...
Even a metal like sodium (melting point 97.8°C) melts at a considerably higher temperature than the element (neon) which precedes it in the Periodic Table. Sodium has the electronic structure 1s 2 2s 2 2p 6 3s 1 . When sodium atoms come together, the electron in the 3s atomic orbital...
An atom with a positive charge has: A. more neutrons than protons B. more protons than neutrons C. more electrons than protons D. more protons than electrons E. equal numbers of proton, electrons, and neutrons What is a metallic atom? What is the name of the element that has an atomic...
Hydrogen (H), on the other hand, has only one proton in its nucleus, so its atomic number is 1, and it appears at the beginning of the periodic table. The atomic number of each element, which is the number of protons in its nucleus, appears next to its symbol in the table. If ...
determines its atomic number, Z. Hydrogen is the lightest element and has one proton (Z = 1); uranium is the heaviest naturally occurring element and has 92 protons (Z = 92). Each proton, which is assigned a mass of 1.00728 atomic mass units (amu), has a charge designated as +1. ...
What is the symbol for the chemical element hydrogen? An atom with a positive charge has Where does the word hydrogen come from? What is an example of a hydrogen bond? What is the charge of halogens? What is the charge of potassium?
All atoms of a given element are exactly alike and atoms of different elements are different. In 1897, the English scientist named J.J. Thomson provided the first hint that an atom is made of even smaller particles. Can we see an atom? Atoms are really small. So small, in fact, that...
A proton is a subatomic particle found in the nucleus of atoms that differs from the other subatomic particles (called neutrons) in the nucleus of most atoms because each proton has a positive charge of +1 (as opposed to neutrons, which have no charge).
In chemistry, how can one tell if an element is able to be paired with another element? What is a quanta of energy? What is the size of the nucleus? Is the atom the smallest part of matter? An electron has a speed of 0.75c. Find the speed of a proton that has (a) th...
Elements are Made of Atoms Particle Where found Charge Mass Electron Outside nucleus negative Hardly any Proton In nucleus positive 1 Neutron neutral An atom is the smallest particle of an element that has all of it’s characteristics of that element Atoms consist of even smaller parts Proton, ...