High School Students’ Conceptions about Energy in Chemical Reactions (focusing only in exothermic and endothermic reactions). Aim The aim of this study is to investigate students’ understanding of the energy concept in chemical reactions particularly in endothermic-exothermic reactions. Both qualitative and quantitative methodology was used for this investigation. A twenty-item multiple choice test was developed about the topic to measure the students’ understandings. This concept test was
Premium Thermodynamics
REACTIONS OF HYDROCARBONS Diane Cate Satsatin Biology Student‚ Biology Department College of Science‚ De La Salle University-Dasmarinas ABSTRACT Five substances which are Hexane‚ Eugenol‚ Unknown hydrocarbon 1‚ Unknown hydrocarbon 2‚ and Acetylene gas was used for the selective reactivity of hydrocarbons to functional group tests; Bayer’s test‚ Bromine test light‚ Bromine test dark‚ and Tollen’s test. In Bayer’s test‚ only Acetylene‚ Eugenol and Unknown hydrocarbon 2 reacted positively
Premium Hydrocarbon Alkene Functional group
THE HILL REACTION: EFFECT OF HERBICIDES (CLEAROUT 41 PLUS AND DIURON 50 WP) IN CORN (ZEA MAYS) LEAVES JENNY A. ADTOON ELIEZER B. GALOPE II SANDY FAYE D. SALMASAN JYAN DESSE M. SOLANO MARIANNE KRISTELLE E. YARRA INTRODUCTION Photosynthesis sustains almost all of the living world directly or indirectly. It is the process of converting light energy to chemical energy of sugars and other organic compounds. The process depends on the interaction between two sets of reactions‚ namely the
Premium Photosynthesis
Investigating arteries and veins Methodology 1. Suspend a ring of artery from a hook on a clamp stand. 2. Use a metre rule to record the length of the ring once the mass carrier has been attached to the free end of the ring. 3. Attach a 10 g mass and record the length of the ring after the mass is added. 4. Remove the mass and record the length of the ring. 5. Repeat steps 2 and 3 using 20‚ 30‚ 40 and 50 g masses. Record the length with and without the masses each time. When comparing
Premium Blood vessel Blood Artery
Republic of the Philippines NATIONAL POLICE COMMISSIO PHILIPPINE NATIONAL POLICE Sagada Police Station Sagada‚ Mt. Province TO : Mario Masipag Chief of Police SUBJECT : Special Report Re: Bank Robbery DATE : October 26‚ 2013 I. AUTHORITY: 1. SOP of the Station 2. Blotter Entry No. 0317‚ Page No. 137 dated October 15‚2013 II. MATTERS INVESTIGATED: 3. A case of Bank Robbery on complaint of Mr. Mario Mabuti‚ 33 years old‚ married Secretary of the bank
Premium Constable Building Pleading
The light reactions of photosynthesis contain two photosystems‚ two electron transport chains‚ and ATP synthase. These parts are embedded in the thylakoid membranes of a chloroplast. The photosystems contain a collection of chlorophyll molecules. Chlorophyll‚ which is the green pigment of leaves‚ absorbs light energy that excites electrons to a higher energy level. Energized electrons from photosystem I are passed down an electron transport chain and added to NADP+ to form NADPH. Electrons from photosystem
Premium Photosynthesis
Coupled Reactions Louella Rose E. Tan‚ Frances May L. Coralde Institute of Chemistry‚ University of the Philippines‚ Diliman‚ Quezon City 1101 Philippines Results and Discussion A combustion reaction is a reaction that liberates heat and light. Magnesium is a stable element and reacts violently with evolution of much heat and light. The reason the magnesium burned in carbon dioxide was because it combined with the oxygen in the CO2 leaving elemental carbon behind. CO2(g) C(S) + O2(g)
Premium Adenosine triphosphate Carbon dioxide Oxygen
to differentiate IgG antibodies from sensitized RBCs 21. Type and screening Antibodies reduce time for 22. Weak D (Du) best detected by 23. HLA complex is located on 24. Sum of all attractive forces between antigen and antibodies 25. Strength of primary interaction between a single antibody and combining site and an epitope 26. Antibodies in Rh system typically react at what temperature 27. Blood components prepared in BB except: Fibrinogen‚ Cryosupernatant‚ Deglycerolized RBC
Premium Immune system Blood
Types of Chemical Reactions | Cartoon Book | In this booklet you will understand the nature of chemical reactions and reaction types. | Omolola Olaleye #10 | Block 2 Physics Week 13 Day 5 11/4/2011 | Standard: SPS2 Students will explore the nature of matter‚ its classifications‚ and its system for naming types of matter. | The Nature of Chemical Reactions Chemical reactions are everywhere! The food you eat and the oxygen you breathe change from during reactions inside your body.
Premium Chemical reaction Chemistry
Vol.4‚ No.3 – October 2013 Investigating the Facility Management Professional Shortage Roscoe Hightower‚ Jr.‚ Ph.D. Professor of Marketing School of Business and Industry Florida A&M University Tallahassee‚ FL 32307 roscoe.hightower@famu.edu and James Highsmith MBA Candidate School of Business and Industry Florida A&M University Abstract Purpose: The purpose of this manuscript is to investigate the importance of creating a collegiate educational program that focuses on attracting
Premium Facility management