Key Questions 8.1 and 8.2: Writing and Balancing Chemical Equations Include phases of matter for ALL reactants and products. Circle the chemical formula of the precipitate‚ if any‚ in each reaction. Balance all chemical equations. 1. Write a chemical equation for the reaction that occurs when solid sodium oxide is added to water at room temperature to yield sodium hydroxide . (Check the Solubility Rules to determine the phase of matter of sodium hydroxide.)
Premium Chlorine Oxygen Carbon dioxide
1. Iron (IIII) and copper (II) sulfate solution Fill a small test tube halfway with copper (II) sulfate solution. Add a 2.0 gram iron rod to the solution and observe the reaction. 2 Fe + 3 CuSO4 = 3 Cu + Fe2(SO4)3 The new product is iron (III) sulfate‚ it contains the Fe 3+ ion which is brown. Lead (II) nitrate and potassium iodide solutions Pour about 2.0 mL of lead (II) nitrate into the test tube. Add 5 to 10 drops of potassium iodide solution to the test tube and record your observations
Premium Hydrogen Magnesium Oxygen
Determination of Cations and Anions through Elimination and Confirmation Tests By: Symantha Resendiz Introduction A topic of great importance to all scientists is the identification of compounds‚ which is relevant in all aspects of their work in some way shape or form. Weather it may be determining what is causing sickness or what is polluting the air‚ it is very prevalent in the science world. In project 2‚ identification of cations and anions was preformed through a series of confirmation
Premium Ion Ammonia Solubility
Title: Testing For Macromolecules Objective: Introduction Proteins are complex molecules which consists of carbon‚ oxygen‚ hydrogen and nitrogen. All proteins are made up of one or more polymers‚ known as polypeptides. Its monomers are amino acids. Protein can be divided into primary structure‚ secondary structure‚ tertiary structure and quaternary structure. It is important for all living things in the world as they form enzymes‚ antibodies and hormones. Materials and Procedures:
Premium Protein Amino acid
Chapter 42 Care of Patients with Hematologic Problems Copyright © 2013‚ 2010‚ 2006‚ 2002 by Saunders‚ an imprint of Elsevier Inc. Anemia Reduction in either the number of RBCs‚ amount of hemoglobin‚ or hematocrit Clinical sign (not specific disease); manifestation of several abnormal conditions Copyright © 2013‚ 2010‚ 2006‚ 2002 by Saunders‚ an imprint of Elsevier Inc. 2 Cardiovascular Effects of Anemia Orthostatic hypotension Tachycardia (increasing with activity‚ after meals)
Free Red blood cell Sickle-cell disease Blood pressure
some disaccharides which have exposed carbonyl groups will react with Benedict’s solution‚ whereas other disaccharides will not react with Benedict’s solution. The electrons from the aldehyde or ketone group of reducing sugar will react with the copper sulfate from the Benedict’s solution to form cuprous oxide‚ a red-brown precipitate. A non-reducing sugar will be verified by a negative test of Benedict’s solution before hydrolysis by acids‚ followed by a positive test of its hydrolysis into monosaccharide
Premium Glucose Sucrose Fructose
Elements‚ Mixtures and Compounds An element is a pure substance made of one type of particle (atom). Particles can join up with other particles of the same type to form molecules. Examples: Hydrogen = H2 . This means there are two atoms of hydrogen joined together to form a molecule of hydrogen gas. Oxygen = O2‚ Nitrogen is H2‚ Chlorine is Cl2. A compound is a pure substance of two or more elements chemically combined together in a set ratio. Example: Water = H20 this means there are always
Premium Chemical element Chemistry Carbon dioxide
used to electroplate objects. This is useful for coating a cheaper metal with a more expensive one‚ such as copper or silver. How it works The negative electrode should be the object that is to be electroplated The positive electrode should be the metal that you want to coat the object with The electrolyte should be a solution of the coating metal‚ such as its metal nitrate or sulfate Here are two examples. Electroplating with silver The object to be plated‚ such as a metal spoon‚ is connected
Premium Electrolysis Chlorine Hydrogen
illogical‚ inadequate‚ not sound or can be shown to be wrong. Hydrates are inorganic salts that hold water. They contain a specific number of strongly bonded water molecules as part of their crystal structure. Such water molecules are called water(s) of hydration‚ or water(s) of crystallization. The formula of a hydrate consists of the formula of the anhydrous (without water) compound followed by a dot‚ then the specific number of water molecules. The dot in the formula indicates a type of bond‚ while strong
Premium Water Mass
Compound Katie Sanders Science Block 3 February 29‚ 2012 Title: Analysis of a Hydrated Crystalline Compound Purpose: The purpose of our experiment was to determine the amount of water in copper sulfate pentahydrate expressed as a percent. Hypothesis: I think that bluestone crystals are 20% water‚ because it’s called pentahydrate (penta means five) and 1/5 of 100 (since it’s expressed as a percent) is 20‚ so I think bluestone crystals are
Premium Mass Copper Sulfuric acid