What happens when zinc is added to water
When you combine zinc and water, the reaction releases hydrogen, which reacts with oxygen explosively. ChaCha! [ Source: http://www.chacha.com/question/what-happens-when-zinc-is-added-to-water ]
More Answers to "What happens when zinc is added to water"
- What happens to zinc when added to water?
- http://wiki.answers.com/Q/What_happens_to_zinc_when_added_to_water
- steam is produced. steam is produced.
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- its all about chemistry. Our topic is HYDROGEN. help me to answer these questions.?
- Q: here is the procedure that our teacher gave us. pls help me because the materials are not enough as well as the chemicals..PROCEDURE1.PREPARATION OF HYDROGENCAUTION: No flame should be near the hydrogen generator.a.Place 10 grams of granulated zinc into the flask and stopper tightly.b.Pour enough water through the thistle tube to cover the zinc. Add 6-10 drops copper sulfate solution.c.Prepare 9N Sulfuric acid by pouring slowly 15 mL of concentrated acid into the beaker containing 45 mL of water. (NOTE: Always add acid into water.)d.Stir the water with a glass rod while adding the acid. Cool the dilute acid and pour about 5-mL portions of it through the thistle tube. Excess acid causes vigorous reaction.e.Discard the first test tube of gases that come out of the delivery tube. Collect 5 test tubes of pure hydrogen gas by water displacement and stopper tightly.Write the equation for the reaction between zinc and copper sulfate.______________________________________________________________________________Write the equation for the reaction between zinc and sulfuric acid.______________________________________________________________________________Should the test tubes of hydrogen be set upward or downward? Why?______________________________________________________________________________What type of catalyst is copper sulfate? ______________________________________________2.PROPERTIES OF HYDROGENa.Based on your observation during its preparation, determine the following properties of oxygen: Color: ________________________Odor: ________________________Taste: ________________________Solubility in water: _______________ b.Allow one test tube of hydrogen to stand for 15 seconds upward with its mouth uncovered and then place a lighted splinter over its mouth. Repeat the test process with another test tube of hydrogen leaving it open for 45 minutes.Observation:First test tube: _______________________________________________________________Second test tube: ____________________________________________________________What is the significance of the result of the second test tube? ___________________________________________________________________________c.Place a test tube of hydrogen in an inverted position. Remove the stopper and immediately place an empty test tube below it, bringing the two containers mouth to mouth. Carefully reverse their position while still attached to each other and let it stand for 30 seconds. Test each test tube for the presence of hydrogen gas.Observation:___________________________________________________________________________ d.Insert a lighted splinter into an inverted test tube of hydrogen. Slowly withdraw the splint and again thrust it into the gas. Repeat as long as the phenomenon continues.Equation for the combustion of hydrogen:___________________________________________________________________________What happened to the splinter: (a) when it is thrust into the gas?___________________________________________________________________________(b) when it is withdrawn?___________________________________________________________________________3.REACTION OF METALS WITH ACIDSa.In 7 separate test tubes place 5 mL of 6N HCl. b.Test the reaction of the acid when a few pieces of the following metals are added to the different test tubes: granulated zinc, iron filings, copper filings, granulated aluminum, magnesium ribbon, granulated tin, and pulverized antimony. c.Observe the rate at which hydrogen is evolved in each tube.Equation for the reactions which occurredOrder of reactivity
- A: Laboratory procedures are designed to give you the first-hand experience with chemical reactions. By doing the lab you have the opportunity to observe what is happening, and you can then form your own conclusions. I could give you all the answers to the questions, and then you would not be compelled to do the procedure at all. That would be unfortunate, because you would not learn anything from it and you would miss an exciting experience. I'll just comment that in general, more reactive metals will react with dilute acids displacing hydrogen gas, and forming salts of those metals. Less reactive metals will not react with dilute acids. For metallic reactivity series, consult a reference table (see the links below). Hydrogen gas has the lightest molecules of all the known gases, so its density is much less than that of air.
- Science Help SCREAMS!?
- Q: 1) In aniron rod the particles vibrate. If one end of an iron rod is heated the vibrating particles transfer engery to neighbouring particles which are not vibrating so violently. What is this process called?2) An electric immersion heater is put at the bottom of a large tank of water. The water next to the heater becomes warm. Why can heat not be transferred in this way in an iron rod?3) In a liquid some of the particles have enough kinetic energy to escape form the surface. This process happens even when the liquid is well below its boiling point. What is this process called? How will this affect the temprature of the liquid left in the container?4) Jill bought a can of wax seal to spray the parts underneath her car. Wax seal helps prevent these parts rusting. It is a mixture of wax and a liquid called white spirit. The body of Jill's car is made from steel. Steel contains iron. Give two substances that are needed for iron to rust?How does wax seal help to protect the car from rusting?Wax seal can also be used on the upper parts of a car. What else protects parts such as the doors from rusting?5) Bromine can be a solid, a liquid, or a gas depending on the temperature. In which physical state will 10g of bromine store the most thermal energy?6) George used the apparatus below to find out what substances are produced when methanol burns. As the methanol burned two different gases were produced. One of these gases condensed in the U-tube to give a colourless liquid. What is it? The other gass turned the lime water cloudy. What is it?6) Water freezes a zero celsius. The label on the bottle shows how the freezing point changes when different amounts of antifreeze are added to water. Terry put a mixture cointaing 10% antifreeze into the wash-bottle of his car. During the night the temprature dopped to -14 celsius. The wash-bottle burst. Explain why it burst?7) Some pupils made an electric cell using two different metals and a lemon. They put strips of copped and zinc into the lemon and connected them to the terminals of an electric clock. What evidence is there that they have made an electric cell?8) Give a reason why is is more useful to present results as a line graph rather than a table?Any answers will be helpful I have tried these all myself an can't get my head around them. Thanks in advance!
- A: 1- Transference.GOOD LUCK.
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