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zinc and hydrochloric acid chemical or physical change
In a physical change, intermolecular forces (bonds … Choose (4pts) Part : Mixing Lead(II) Nitrate with Potassium lodide (3pts) Record your observations for the mixing of lead(1nitrate with potassium iodide for … Chemical and physical properties of zinc Reactions with other elements. This reaction generates the very flammable element H2, or hydrogen gas. I don't understand WHY the chemical change happened. 1 decade ago. Share Tweet Send ... Ad­di­tion­al­ly, zinc re­acts with halo­gens, oxy­gen, chalco­gens, al­ka­lis, acids, am­mo­nia and am­mo­ni­um salts, and even with less ac­tive met­als. Dissolving zinc in acid is a chemical change. We see that the mixture produces zinc chloride and the temperature of the conical flask is increasing. 2. Change in temperature is one of the observations to determine a chemical reaction. Zinc is a metallic element that reacts with hydrochloric acid when it's in its elemental state. Zinc turnings are placed in a hydrochloric acid solution. Zinc - Element ; HCl - compound; Bubbles indicate a gas is being produced; The Zinc seems to disappear which means its being changed into a different substance; Chemical Change; What gas do you think is being produced? It really isn't being dissolved, it is reacting with the acid to form new substances. Give examples of physical and chemical changes. Is zinc + hydrochloric acid = zinc chloride + hydrogen a physical or chemical change? Melting is an example of a physical change. please help me! if done in a test tube it heats up and hydrogen bubbles are formed. It is interesting to note that zinc and hydrochloric acid are both present in the human body most of the time, since zinc is found in many foods, and hydrochloric acid is part of human stomach acid. Distinguish between physical and chemical changes. Zinc turnings are placed in a hydrochloric acid solution. Take zinc granules in a conical flask and add hydrochloric acid to it and observe. Despite the fact that your stomach produces hydrochloric acid, the zinc in food and supplements doesn't react with stomach acid, because the zinc is not in elemental form. Anonymous. As an ice cube melts, its shape changes as it acquires the ability to flow. Why does a chemical change occur when piece of zinc is in hydrochloric acid & a piece of burning splint is over it? chemical change, because intramolecular bonds (i.e bonds between ATOMS) are being broken and reformed. We did a lab and we put a piece of zinc in hydrochloric acid, placed our thumb over the test tube for one minute, then put a piece of burning splint is over it. Relevance. 5 Answers. Physical Changes. Zinc re­acts with both acids and al­ka­lis, mak­ing it an am­pho­ter­ic met­al. REPORT SUMMARY (1 pts) Is the change you observed during the mixing of zinc and hydrochloric acid chemical or physical? 1. Since the zinc is oxidized and the reaction needs to remain balanced, the hydrogen atoms are reduced. Answer Save. 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