change. -snow melting and freezing into ice -fuel being changed into gas for cars -ponds freezing over to have a layer of ice Page 2 : E:\CC_Software\Workbench\CC-MW-CD\part2\phasechange\page2.cml 1. Describe the motion of atoms and molecules in a gas. the atoms and molecules bounce off one another each time they come in contact with eachother. they never bond‚ but reflect off of eachother and spread around. 2. How are the behavior and arrangements of gas molecules similar to and different
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Sir Isaac Newton can be most commonly known as the guy who came up with the concept of gravity when an apple fell on his head as he was sitting under a tree. He was born on January 4‚ 1643 in Lincolnshire‚ England and later on died in London‚ England on March 3‚ 1727. Although Newton was known as a brilliant man‚ his childhood education days proved otherwise‚ there were school reports that conveyed him as being inactive and careless. When he was about ten years old‚ he started school at the “Free
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best completes the statement or answers the question. ____ 1. Ions are a. electrically neutral fragments of a molecule that has been split apart. b. polar molecules c. radioactive isotopes that give off alpha‚ beta‚ or gamma d. charged atoms or molecules that have gained or lost electrons. ____ 2. Sodium has eleven protons. How many electrons does it have in its outermost shell? a. one b. two c. four d. six ____ 3. Chlorine‚ with an atomic number of 17‚ would be expected
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considered a hero to many. That person is Sir Isaac Newton. Newton was a prodigy who has inspired many people to work hard and explore the unknown. He has inspired many people including myself to follow his footsteps and try my hardest. Newton‚ the genius of his time‚ had succeeded the impossible ability in developing laws and theories that seemed audacious in his time. In his time‚ Newton discovered many things in the realms of science and mathematics. Newton was most known for his work on gravity
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M-F (12-1) Bonding Atoms to Form Molecules 1) Observe a) Atoms bond together to form molecules b) Some molecules are inorganic (non-living). c) Some molecules are organic (are/were living)‚ containing all or part of Mr. Cohn. d) Atoms can bond ionically‚ whereby an atom gives up valence electrons and becomes a + ion‚ and another atom receives those electrons and becomes a – ion. The overall charge on the molecule then becomes zero. e) Atoms can bond covalently
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Atoms are a part of our everyday life. Even though people might not realize it‚ they contribute to more things than people may think. From small things such as a small pebble‚ to something huge‚ like a castle. They inhabit our lifes in more way than one. Atoms make up everything around us from the air we breathe to food we eat and even the stars in the sky. The average layman does not know much about the atom but in this paper I will explain what and why they are. The word atom comes from the Greek
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Models of the Atom a) Plum Pudding Model The plum pudding model imagines the atom as a positively charged entity that contains randomly dispersed (negative) electrons within it. It is called the plum pudding model because the electrons in the positively charge cloud resemble raisins in a pudding. Thomson realized that all atoms must contain electrons‚ and since the atoms had a neutral charge‚ they must also include protons. This led him and other to think of the atom as a positively charged
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pADVENTURES of an Atom By: Nicole Zemaitis Atom-Smallest particle of an element that retains the properties of the element. Scientific discovery is how the present day Atomic Theory was made up. The current atomic theory was formed by different scientists over many years‚ each scientist building on or proving theories wrong. Democritus 460-370 B.C. Narrative: Hello! My name is Anna the Atom. I’m writing to you to describe
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phosphorus atom. A) 4‚ 2 B) 2‚ 4 C) 2‚ 3 D) 4‚ 3 E) 0‚ 3 2-There are __________ paired and __________ unpaired electrons in the Lewis symbol for a phosphorus atom. A) 4‚ 2 B) 2‚ 4 C) 2‚ 3 D) 4‚ 3 E) 0‚ 3 3- How many unpaired electrons are there in an ion? A) 0 B) 1 C) 2 D) 3 E) This cannot be predicted. 4-What is the electron configuration for the ion? A) B) C) D) E) 5- How many single covalent bonds must a silicon atom form to have
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Brief Historical Development and Contributions of Chemistry for Modern Civilization Introduction: As defined by Oxford Dictionary‚ Chemistry is the scientific study of the structure of substances‚ how they react when combined or in contact with one another and how they behave under different conditions . In other words‚ Chemistry is the study of the materials and substances of the world in which we live. The materials‚ which make up the earth‚ sea and air‚ are called raw materials. These include
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