space -Elements are the most basic substances something can be broken down into. There are about 100 elements known to scientists right now. There may be more‚ but elements with more than 100 protons are extremely unstable and may only be created in labs. -Atoms are the smallest building blocks of matter‚ each element is made up of a SPECIFIC type of atom. When atoms combine they form MOLECULES. -Macro is big. Micro is small. -Chemistry is a central science which means that it can be incorporated
Premium Chemical substance Units of measurement Chemistry
Research The Chemical name for Baking Soda: Baking soda is sodium bicarbonate. The molecular formula of sodium bicarbonate is NaHCO3. What Baking Powder contains: Baking powder is a raising agent that is commonly used in cake-making. It is made from an alkali- bicarbonate of soda‚ and an acid- cream of tartar‚ plus a filler like corn flour or rice flour which absorbs moisture. Baking powder is a mixture of leavening agents (baking soda‚ acid salts) and inert ingredients (cornstarch‚ calcium
Premium Carbon dioxide
A Mole is a unit‚ or have you heard. Containing six times ten to the twenty- Third‚ That’s a six with Twenty-three zeros at the end‚ Much too big a Number to Comprehend Say you had a Mole of Dimes to Distribute round the world‚ Give to each of the five billion grownups‚ Boys and girls‚ There wouldn’t be a single soul down and out of luck‚ Cause everybody in the world would get a trillion bucks. Or say you had a mole of construction paper and Stacked it towards Space Construction
Premium Earth Sun Molecule
Quiz--Moles‚ Mass‚ and Molecules Multiple Choice (Choose the best answer.) 1. What is the mass of one mole of AuCl3? A. 96 g B. 130 g C. 232.5 g D. 303.5 g E. 626.5 g 2. What is the mass of one mole of (NH4)2CO3? A. 144 g B. 138 g C. 96 g D. 78 g E. 43 g 3. A container of negligible mass is filled first with argon and then with helium. Which statement below would be true about the masses of the two gases (after adjustment for the buoyant effect of air)? A. The mass of the helium would be 1/9th
Premium Oxygen Atom Molecule
www.igcse.at.ua ORGANIC CHEMISTRY OIL and its many useful PRODUCTS The origin of oil Crude oil is formed from organic material of the remains of plant and animal organisms that lived millions of years ago. These remains form sediments eg at the bottom of seas‚ and become buried under layers of sedimentary rock. They decay‚ without air (oxygen)‚ under the action of heat and pressure to form crude oil over millions of years. It is a fossil fuel because it is formed from
Premium Carbon Oxygen Petroleum
REVIEW a. I‚. • • C • • c. • C 3. The effective nuclear charge is a. equal to the suns of the charges of the protons in the nucleus b. equal to the suns of the charges of the protons in the nucleus minus the sum of the electrons in the Outer shell c. lest than tire sum of the charges of the protons in the nucleus due to shielding by the electrons in the outer shell d. lest than the sum of the charges of the protons in tire nucleus due to nisielding by the
Free Atom Periodic table Chemical element
Chemistry 2283g Experiment 1 – Alkyl Halides EXPERIMENT 1: Preparation and Reactivity of Alkyl Halides Relevant Sections in the text (Wade‚ 7 ed.) • 6.7 (p. 228) Reactions of alkyl halides • 6.8 – 6.12 (p. 229 – 242) The SN2 reaction: generality‚ factors affecting SN2 reactions‚ substrate reactivity‚ mechanism • 6.13 – 6.14 (p. 243 – 249) The SN1 reaction: mechanism‚ stereochemistry General Concepts The most common of the variety of methods available for preparing alkyl halides is the replacement
Premium Alcohol Sodium chloride Functional groups
xam 2 [pic] Summer 2011 Chemistry 1411 EXAM # 2 Activity Series of Metals in Aqueous Solution [pic] CHEM 1411 Exam # 2A Name:________________________________ (Chapters 4‚5‚6‚ and 7) Score: [pic] Part I- ( 3 points each) - Please write your correct answer next to each question number‚ DO NOT CIRCLE. ____ 1. Compare the rates of effusion of CO2 & SO2‚ rCO2/rSO2 A. CO2 will effuse 1.45 times
Premium Enthalpy Mole Thermodynamics
香港中學文憑考試 HONG KONG DIPLOMA OF SECONDARY EDUCATION EXAMINATION 練習卷 PRACTICE PAPER 化學 試卷一 CHEMISTRY PAPER 1 評卷參考 MARKING SCHEME (2012年2月22日修訂稿) (updated as at 22 Feb 2012) Hong Kong Examinations and Assessment Authority All Rights Reserved 2012 PP-DSE-CHEM 1–1 權版留保 局核評及試考港香 © 。旨之巧技用運與力能解理重着試考違有亦 ，難解及對應懂學，習學善改生學助無既，度態習學種這。吞生剝 活，記死背硬，案答準標為視考參卷評將應不生學。用之考參生學 和師教供，寫編而卷習練科本為專局核評及試考港香乃考參卷評本 This marking scheme has been prepared by the Hong Kong Examinations and Assessment Authority for teachers’ and students’
Premium Chemical reaction Chemistry Gospel of Mark
_________ ___________ Grading: Q.# 1. 2. 3. 4. 5. 6. 7. Score (Max) __________ (60 pts) __________ (18 pts) __________ (17 pts) __________ (13 pts) __________ (18 pts) __________ (12 pts) __________ (12 pts) Total __________ (150) Chem. 121 Final Exam Fall 2010 Name_____________________________________ 1. (3 pts each) Please circle
Premium Question Answer School terminology