Subatomic Particles and the periodic table 1. The three particles and their properties An atom has no overall charge. The protons (positively charged) and neutrons (no charge) make up the nucleus of an atom, and this is surrounded by negatively charged electrons. There are as many protons as electrons, so they balance each other out, creating a neutral relative charge on the atom. Neutrons, Protons and electrons are all sub-atomic particles.
Describe the differences between protons and electrons The difference between protons and electrons is that protons are positively charged and that elections are negatively charged. Another difference is that protons are in the nucleus and electrons circle the nucleus in shells outside the nucleus. What is the difference between the mass number and the relative atomic mass of an element? The difference between the mass number and the atomic mass is that the mass number is the number of protons and neutrons in the nucleus and the relative atomic mass is the mass of an atom. Distinguish between an element and a compound with 2 examples for each An element is a substance that cannot be broken down into any simpler substances.
An ionic bond is the transfer of valence electrons between atoms. It is a type of chemical bond that creates two oppositely charged ions. In ionic bonds, the metal loses electrons to become a positively charged cation, the non-metal accepts those electrons to become a negatively charged anion. Ionic bonds require an electron donor, metal, and an electron acceptor, nonmetal. By losing those electrons, these metals can achieve noble-gas configuration and satisfy the octet rule.
If the atom is alone, such as the iron on the left and the hydrogen on the right, you can just multiply that atom. To start the process, we would need to put a three in front of the H2O on the left, to get three oxygen atoms. But, keep in mind this also will give you six hydrogen atoms. (Two times the three.) This will bring your equation to look like this: 3H2O+Fe ---> FeO3+H2 The equation is not yet balanced, since we now have an uneven number of iron and hydrogen atoms.
Your friend says that what makes one element distinct from another is the number of electrons about the atomic nucleus. Do you agree wholeheartedly, partially, or not at all? Explained • NO • What makes one element distinct from another is the number of protons in the nucleus. Hydrogen has 1, gold has 79, uranium has 92, etc. Not electrons.
Astronomy 10 Chapter 11 1. Both used to be normal stars but the white dwarf ran out of hydrogen, they are both subjected to gravitational theories. A Neutron star is a fluid of neutrons, as hot at its surface as the inside of the sun and has a greater magnetic field. 3. Because its density is so high, neutrons spin in the same way that electrons do so must obey the Pauli Exclusion Principle.
According to the First Law of Thermodynamics, energy cannot be created or destroyed. There-fore, energy is not really lost, but may be released in another form such as heat or light. In this form, the energy may be partly unusable. (p. 28) 25. a. Ca, b. C, c. H, d. Fe, e. N, f. 0, g. K, h. Na (p. 29) 26. a.
The electrons of an atom are bound to the nucleus by the electromagnetic force. A group of atoms can remain bound to each other by chemical bonds based on the same force, forming a molecule. An atom containing an equal number of protons and electrons is neutral; otherwise it is positively or negatively charged and is known as an ion. An atom is classified according to the number of protons and neutrons in its nucleus the number of protons controls the element, and the number of neutrons determines the isotope of the element. A molecule is an electrically neutral group of two or more atoms held together by chemical bonds Molecules are recognized from ions by their lack of
Electromagnetism Everything is made out of atoms. Atoms consist of a nucleus (containing neutrons and protons) and a cloud of electrons surrounding the nucleus. Protons are positively charged and electrons are negatively charged. If an object has more protons than neutrons, then it is negatively charged. If an object has more electrons than protons, then it is positively charged.
Nuclear fission: Nuclear fission is the process in which a large nucleus breaks into two smaller nuclei that are almost equal in mass. Energy is released during nuclear fission. The earliest nuclear fission was carried out by Cockcroft and Walton, who used fast protons from a linear particle accelerator to bombard lithium nuclei. The energy released is equal to the difference in the binding energy of the products and the binding energy of the nucleus before fission. The energy released is in the form of increased kinetic energy of the product particles and any radiation emitted.