Self-assessment practice tests Test 1 – Material from Chapters 2–4 | 45 minutes 1 The kinetic theory suggests different arrangements for the atoms or molecules in the three states of matter. The diagrams below show how evidence suggests the particles are arranged in the three states of matter. 1 2 3 What are the three states shown? 1 A B C D 2 gas liquid solid liquid 2 liquid gas liquid solid 3 solid solid gas gas The graph shows the heating curve for a metal that is solid at room temperature (25
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up of atoms. All atoms possess a nucleus of positively charged protons as wells and neutrons which are neutrally charged. Surrounding the nucleus is a low density area containing negatively charged electrons that are equal to the number of protons within the nucleus. The number of protons within an atom determines the element that it composes. Every element within the Periodic table is defined by its atomic number (the number of protons in the atom). Elements with an atomic number between 1 and 92
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The PERusahaan Otomobil KeDUA Sendirian Berhad‚ is Malaysia’s second largest automobile manufacturer after Proton. It was established in 1992 and launched their first car‚ the Perodua Kancil in August 1994.The shareholders of Perodua are UMW Corporation Sdn Bhd with 38% stake‚ Daihatsu Motor Co. Ltd. (20%)‚ MBM Resources Bhd (20%)‚ PNB Equity Resources Corporation Sdn Bhd (10%)‚ Mitsui & Co. Ltd (7%) and Daihatsu (Malaysia) Sdn Bhd (5%). The company started operations in 1994 and the ever so popular
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Matter: anything that has mass and takes up space Particle Theory: the scientific statements that summarize about particles of matter 1. All matter is made up of particles that contain spaces between each particle 2. Different substances are made up of different types of particles 3. Particles are always in constant motion 4. The movement of particles will increase if temperature rises 5. Particles are attracted to each other Pure substance: a substance that consists of only 1 type of particle
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was chosen is because his work had information on protons‚ neutrons‚ and electrons‚ the main components that make up the atom‚ showed what the atom looks like when the three are put together‚ and had also been the discoverer of the nucleus which is the one of them most important parts of the atom’s structure. The discovery of the particles that
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combine in simple whole-number ratios to form compounds (see below)‚ in a chemical reaction‚ atoms are separated‚ combined‚ or rearranged. Whole-number ratios: No halfsies. But he was wrong about atoms being indivisible (that’s how we know about protons and neutrons and electrons and the other subatomic particles). And how atoms of the same element have identical properties: atoms of an element may have slightly different masses‚ e.g: ISOTOPES. You can see an atom using the scanning tunneling
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the history of Perusahaan Otomobil Nasional Berhad (PROTON). It is the national car project whose brainchild was none other than the Prime Minister Dr Mahathir himself. Prior to the incorporation of PROTON on 7 May 1983‚ the industry comprises mainly of assemblers of foreign cars such as Tan Chong Motors‚ the assembler for completely knock down (CKD) Nissan cars and Kah Motors‚ the assembler for CKD Honda cars. Since the inception of PROTON and subsequently PERODUA‚ the country second national
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particles called protons‚ electrons‚ and neutrons. Protons carry a positive electrical charge‚ electrons carry a negative electrical charge‚ and neutrons carry no electrical charge at all. The protons and neutrons come together in the central part of the atom‚ called the nucleus‚ and the electrons ’orbit’ the nucleus in the electron cloud. An element is a substance that is made entirely from one type of atom. For example‚ the element hydrogen is made from atoms containing a single proton and a single
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Online Submissions: http://www.wjgnet.com/1948-9358office wjd@wjgnet.com doi:10.4239/wjd.v2.i12.217 World J Diabetes 2011 December 15; 2(12): 217-220 ISSN 1948-9358 (online) © 2011 Baishideng. All rights reserved. BRIEF ARTICLE Are proton pump inhibitors a new antidiabetic drug? A cross sectional study Diana Boj-Carceller‚ Pilar Bocos-Terraz‚ Miguel Moreno-Vernis‚ Alejandro Sanz-Paris‚ Pablo Trincado-Aznar‚ Ramón Albero-Gamboa Diana Boj-Carceller‚ Alejandro Sanz-Paris‚ Pablo TrincadoAznar
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different elements absorb and emit different wavelengths of light. (2) Gamow thought that nuclear fusions took place in the first minutes after the Big Bang‚ because he assumed that the initial components of the universe would have been seperate protons‚ neutrons and electrons. He hoped that they could build bigger atoms by fusion in the heat of the Big Bang‚ because nucleosynthesis‚ which
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