With Dr. Doumit. The Explosion 2H2 (g) + O2 (g) ---------------- 2H2O (g) An example of a...

Chemistry Experimentswith Dr. Doumit

The Explosion2H2 (g) + O2 (g) ---------------- 2H2O (g)An example of a combustion reaction!Hydrogen Balloon ignited by a flame.

Properties of CopperPennies are coated with copper. Which are physical properties of copper and which are the chemical properties? What are two additional properties?

Observing Chemical Change

Breaking and Making BondsDescribe what happens to the bonds in each of the steps as oxygen reacts with magnesium.

Observing Chemical Change

Describing Chemical Reactions

Chemical FormulasThe formula of a compound identifies the elements in the compound and the ratio in which their atoms or ions are present. What are the missing chemical formulas in the table?

Modeling a Chemical EquationLike a skateboard, a chemical equation has a basic structure. How many complete skateboards can be made from the parts pictured?

Molecules of nitrogen (N2) and hydrogen (H2) react to form ammonia (NH3). How many H2 and N2 molecules are needed to yield two molecules of NH3?

Balancing Chemical EquationsWhat are the four steps in balancing chemical equations?

Step 1 Step 2

Step 3 Step 4

Types of ReactionsWhat is each type of reaction represented?

Activation EnergyA chemical reaction needs a push to the “top of the mountain” to get started. Where has enough activation energy been added to start the reaction?

Controlling Chemical Reactions

Graphs of Exothermic and Endothermic ReactionsEach of the graphs shows the amount of energy before and after the reaction. On each graph, determine whether energy is absorbed or released.

CatalystsAdding a catalyst speeds up a chemical reaction. How would the energy graph change for the same chemical reaction if a catalyst were used?

Crookes Tube (Cathode ray tube)

Deflection of electrons on a magnetic field.

If a magnetic field is placed across the beam (with the north pole indicated by tape in front), the beam is deflected downward as shown (by Steve Grabowski) in Figure 110-3.

If the magnetic field is reversed (so that the north pole is in the back) the beam is deflected upward as shown in Figure 110-4.

Why it WorksA magnetic field does not exert a force on a

stationary electron. However, a magnetic field does produce a force on a moving electron. The electron's motion, the magnetic field, and the force are all at right angles to each other.

The PointProperties of the electron can be determined by

observing its behavior in electric and magnetic fields.The electron is negatively charged. The force

produced by a magnetic field on a moving beam of electrons can be described by the right-hand rule, in which the thumb indicates the direction of the force, the index finger indicates the direction of the motion of the electrons, and the rest of the fingers indicate the direction of the magnetic field.

Careful analysis of electric and magnetic fields on an electron beam determines the charge to mass ratio of the electron.

With Dr. Doumit. The Explosion 2H2 (g) + O2 (g) ---------------- 2H2O (g) An example of a...

Documents

Precession Method used in Orientation for Single Crystals of L-lys HCl 2H2O and L-arg HCl H2O Yiying Zhou Department of Physics and Astronomy Georgia State

Supporting InformationSupporting Information Chemicals and reagents Copper foam (1 mm) was obtained from GJY Electron. Mater. Co., Ltd. Ni(NO3)2∙6H2O, CO(NH2)2, NH4F, Na2WO4∙2H2O,

An eco-friendly scheme to eliminate silica problems during ...574/datastream/PDF...2NaOH CO2 Na2CO3 H2O [1] Na2SiO3 CO2 2H2O H2SiO3 2NaHCO3 [2] Two separate studies were conducted

Supporting Information · 2 Experimental Section Material synthesis All reagents were commercially purchased and used without further purification. Zinc acetate dihydrate (Zn(CH3COO)2‧2H2O,

Design for Sustainability - MIT OpenCourseWare...CaSO4 + 2H2O) 120-180 oC 240-600 oC Anhydrit rock natural (calciumsulfate, CaSO4) Gypsum mine Calciumsulfate hemihydrate (a/b-CaSO4

Inorganic Chemistry - FIZ CHEMIE · Inorganic Chemistry Physical Properties of Solids and Liquids Structure D 2000 DOI: 10.1002/chin.201225001 2Mg(OH)2·MgCl2·2H2O and 2Mg(OH)2·MgCl2·4H2O,

Photocatalyst for Water Splitting without Sacrificial …Characterizations: Crystal phases and structures of the synthesized MnIn2Se4 and CoSeO3*2H2O samples were analyzed by power

NAME: Matthew E. Doumit DATE: January, 2014 OFFICE ......AVS 474, Beef Cattle Science, Coordinator of team taught course, 3 credits, Spring, 2009. AVS 504/567, Advanced Physiology,

Kenneth HuangMichael PhanHien Nguyen. Reaction Chemistry 1)Vinegar + Baking Soda CH3COOH +H2O+ NaHCO3 2H2O +CO2(g)+NaCH3COO 2) Hydrochloric Acid + Calcium

jensenbio.weebly.com · Web view(Peroxidase + Hydrogen Peroxide → Complex → Peroxidase + Water + Oxygen) 2H2O2 → 2H2O + O2 (gas) Peroxidase is an enzyme that breaks down peroxides,

catalyst for Li-oxygen batteries Electronic Supplementary ... · 100 mg pristine GO, Na2WO4·2H2O (99.8 % purity, 1 mmol) and sodium oxalate (99.8 % purity Na2C2O4, 2 mmol) were added

Tutorial Eleven Reaction - CFD...type irreversibleArrheniusReaction; reaction "CH4 + 2O2 = CO2 + 2H2O"; A 5.2e16; beta 0; Ta 14906; } } OpenFOAM® v1712: Also the elements are listed

CHARACTERIZATION AND OXYGEN’S NATURE OF BULK AND … · 2016-08-03 · dengan menurunkan VOPO4·2H2O menggunakan alkohol iso-butil. Sifat-sifat fizikal-kimia mangkin telah dicirikan

Solubility of Zr(IV), Th(IV) and Pu(IV) hydrous oxides in CaCl2 ......CaCl2·2H2O (p.a.), i.e., the water content was confirmed by chloride analysis. The H + standard solutions in

EXECUTIVE€¦ · the roadmap’s original authors and new contributors, like Gilbert Doumit, advocate for privatization, others do not see privatization as the solution. Beirut Madinati

Controllable preparation, structural characterization and ... · developed for the preparation of nanometer-size LDH particles using Zn2Al(OH)6(CO3)0.5·2H2O as prototype. The effects

Electronic Supporting Information · Synthesis of nickel manganese and nickel oxalate precursors.1 For Ni0.85Mn0.15C2O4∙2H2O, three micro-emulsions containing cetyltrimethylammonium

€¦ · Web view · 2012-07-19One important use of electrolysis is to produce hydrogen. The reaction that occurs is 2H2O(aq) → 2H2(g) + O2(g)

VOL. 11 NO. 5 Oc ober t 2012corrosion.andong.ac.kr/publication/pdf/2012/N08810... · youngsik kim and deok hwangbo 198 corrosion science and technology vol.11, no.5, 2012 2h2o)+900

27. INTERSTITIAL WATER STUDIES, LEG 28 - Deep Sea · PDF fileOxalic acid solution: Prepare a saturated oxalic acid ... alic acid dihydrate (COOH) 2 2H2O, ... should not exceed 1 or