How We Know That Stars Are Made Of An Atom Called Hydrogen
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All things that we can see are made up of atoms. Atoms are made of protons, neutrons and electrons. Protons are positively charged, neutrons are not charged and electrons are negatively charged. The proton and the neutron are stuck together, that is called nuclei, and the electron orbits the nucleus in a wave like motion. The amount of protons, neutrons, and electrons can change, creating different atoms with different energy levels.
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Question # 1: Part A How many electrons and protons in an atom of vanadium? Answer # 1: Atomic number = number of protons = 23 Mass number = number of protons + neutrons Mass number = 51 g/mole Number of neutrons = 51-23 Number of Neutrons = 28 Number of electrons = atomic number = 23 Question
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Our latest lab covered a detailed description of atoms and molecules, laid out in a distinctive way using balls and sticks for valence electrons and bonds. We were given charts to fill out recoding our findings regarding several molecules and their electron count, type of bonds,
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But when they join with other atoms, like oxygen in the air, they form molecules. “In the year of 1837 and so forth, the pennies were made of copper, tin and zinc. Now, current
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All matter is made of particles called atoms. An atom is smallest unit of matter. A matter can be solid, liquid or gas. When a group of atoms bond together this makes a molecule. The molecule is the base of chemical compounds that is involved in chemical reactions.
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Matter is made up of atoms; atoms are made of positively charged protons, neutral neutrons, and negatively charged electrons. 3. The measure of space that the molecules occupy (volume) is derived from the space in between the molecules and not the space the molecules contain themselves. 4. The motions for: • Solid- are not able to move out of their positions relative to one another, but do have small vibrational movements.
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Hana Phan Mrs Thomas Honors Chemistry P. 2 9-20-17 Chapter 2 Booknotes 2.1 What is matter? matter - anything that has mass or volume volume - the amount of space an object occupies mass - a measure of how difficult it is to change the object’s state of motion atoms - the basic unit of matter molecules - a neutral group of atoms held together by chemical bonds physical properties - properties that can be observed or measured without changing the composition of matter state - the condition of being a gas, liquid, solid, plasma, or neutron star chemical properties - properties that can be observed only when substances interact with one another Matter is anything that has mass or volume. Volume is the amount of space an object occupies while
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Atoms are made up of three basic components: Protons, Neutrons, and Electrons. The proton particle carries a positive charge while the neutrons carry no charge(neutral). When combined, the protons and neutrons make up the central part of the atom also known as the nucleus. The electrons carry a negative charge and its role is to circle around the nucleus. Each atom also has a unique number of both protons and neutrons that is known as the atomic number.
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Where as, electrons are negatively charged(Doc.3).The neutron is the dense middle of the atom(Doc.3). The protons and neutrons in the atom are in the nucleus(Doc.3). However, the electrons preside in electron clouds outside the nucleus(Doc.3). To sum up, an atom is a small structure that defines what an element is and
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The electromagnetic force causes repulsion between the like-charged protons (positively charged). Both the electromagnetic force and the nuclear force act as opposites which can result in an nucleus being highly stable or highly unstable. This result is affected by which force is dominant in the nucleus, the more dominant the nuclear force it the smaller the nuclei and more stable the
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Proton and neutron collectively known as nucleons, are the building blocks of atomic nuclei, which forms most of visible matters around us. Nucleons interact with each other via strong interaction and this strong interaction determines the property of atomic nuclei. The strong interaction govern the nuclear reactions such as those shaped the early universe, fuels the stars and those in nuclear reactors. Deep Inelastic scattering (DIS), showed that nucleons are composite objects made from fundamental particles called quarks. The strong force between the quarks binds them to form nucleons.
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An atom by definition as said by Webster dictionary is “The smallest particle of a substance that can exist by itself or be combined with other atoms to form a molecule.” Before we had any of this knowledge, many of philosophers and many of scientists worked on the idea of atom. One of the earliest philosopher that studied Atoms was Democritus. Democritus was very influential Ancient Greek philosopher. He was the one who created the Atomic Theory, but he didn’t create it himself, it was his mentor’s idea, which he made famous.
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Particles are labeled in many ways. One way particles are referred to be as atoms (elements). They’re identified by their properties, number or protons and neutrons and atomic number. Another way particles are referred are as molecules (covalently bonded- nonmetal to nonmetal). For example, water is a molecule because it’s composed of nonmetals.
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These particles would change into other elements. A new phenomenon was discovered-radioactivity. To understand how atoms change, we have to look at the structure of an atom; namely, the nucleus of the atom. The atomic nucleus cannot be seen by the naked eye. It is
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When creating a star, gravity pushes hydrogen atoms together, causing tempters to rise. By the time the hydrogen reaches 10 million degrees a process called nuclear fusion begins. When the hydrogen atoms fuse together, it makes a heavier new material called helium. In the process of creating a star hydrogen atoms fuse to make helium atoms, the helium atoms then fuse together to make carbon.
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Nuclear fusion is a naturally occurring phenomenon where the atoms of an element physically merge to form a completely new element. A good example of natural nuclear fusion is the sun. According to the World Nuclear Association, “Fusion powers the Sun and stars as hydrogen atoms fuse together to form helium, and matter is converted into energy… Hydrogen, heated to very high temperatures change from a gas to a plasma in which the negatively-charged electrons are separated from the positively-charged atomic nuclei or ions.” (“Fusion”).
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