Introduction:
Substances can be created and can go through a chemical change. When a substance is produced this is a reaction or chemical change this is also called the product. If a substance is the reason why the experiment this is called a reactant. Whether it is a product or a reactant it depends on what happens in the chemical reaction. There is many types of chemical reactions. If two compounds have ions and they move places creating two new compounds this is called double displacement. If substances combine to form one product then synthesis has occurred. If an element replace one for another in a compound then this is called single displacement. If the reactant breaks down into many products then this is decomposition.To know if
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Put the beaker on the hot plate and start heating up the water till it is boiling.
While the water bath is heating up, make 3 marks 1 cm apart from each other on the test tube with the wax pencil from the bottom of the tube.
Add copper (II) nitrate to the first mark on the test tube.
Add sodium hydroxide to the second mark on the test tube. Then carefully mix with stirring rod. Rinse the stirring rod.
Feel the bottom of the test tube to see if heat is being released. Make your observations in the data table.
7. The copper containing the product is copper (II) hydroxide. The other is sodium nitrate. Record information in data table. Also if precipitate is formed or supernate record that in data table.
8. When this reactions happens this forms two new compounds. Enter in data table.
9. Put the test tube in the water bath again. Then heat it until change occurs.
10. Records observations in the right columns of the data table for this reaction. Identify the type of reaction.
11. Remove test tube from water bath. Turn off the hot plate and allow it to cool.
12. Place test tube in room temperature water. For about 2
When placing the large test tube in boiling water, be sure to keep the face of the large test tube away from you or any lab partners with safety tongs.
What is the appearance of reactant, Evidence of chemical reaction, and properties of a product?
Step 4: Place the test tubes into separate coffee cups to maintain the upward position. Add 2 mls of the catalase solution to each of the test tubes and then place tubes1, 2, and 3 in the conditions described above. For test tube 4, fill the coffee mug half full of boiling
After 1 minute, a slight change in the color of the iron strip was noticed. It became somehow darker.
A chemical reaction is when substances (reactants) change into other substances (products). The five general types of chemical reactions are synthesis (also known as direct combination), decomposition, single replacement (also known as single displacement), double replacement (also known as double displacement), and combustion. In this lab, the five general types of chemical reactions were conducted and observations were taken before, during, and after the reaction. Then the reactants and observations were used to determine the products to form a balanced chemical equation. The purpose of this lab was to learn and answer the question: How can observations be used to determine the identity of substances produced in a chemical reaction?
Place the beaker on the hot plate, place the thermometer in the beaker and set the hot plate to 5oC.
Fill a test tube about 1/3 full with cold tap water for use in step 34.
XIII. Carefully remove the copper metal from the filter paper onto the watch glass. (with a spatula) Place a 400 ml beaker on a hot plate contained with water. Carefully place the watch glass before the water boils to dry the copper metal. (Use the tongs to handle the hot watch glass)
1) Allow the copper in the beaker to dry at low temperature in a drying oven for at least one hour.
1 ml of water should be added to the first test tube and make a note. In the second test tube, 1 ml of methyl alcohol should be added. In the third test tube, 1 ml of hexane must be added. Lastly, the fourth test tube will be a control.
A chemical reaction is a process in which elements or compounds react with one another to create new or different substances. There are two parts to a reaction. Those two parts are the products and the reactants. The reactants are the chemicals or chemical compounds that are going through the reaction itself. The products are chemical elements or chemical compounds that are produced as a result of the reactant or reactants reacting. There are four key indications that there’s a chemical reaction is taking place. Those four signs include a change in color and/or odor, formation of a precipitate or a gas, the release or absorption of energy (light, heat, electricity), and if the reaction is irreversible. Along with this information, there are ways to predict the products of a reaction.
The process was then repeated for the second reaction but using 1.00-mL of a 6.00-M phosphoric acid solution and 4.00-mL of a 3.00-M sodium hydroxide solution.
Submerge the graduated cylinder in the plastic tub so that it is completely filled with water. Hold the open end of the graduated cylinder and move it vertically upside-down where the open end of the graduated cylinder is still submerged in the plastic tub. Clamp the graduated cylinder the ring stand of the lab table to keep it in place. perforate a hole in the top of the rubber cork for the solution container. Cut a straw the length of about four inches. place the straw inside of the rubber cork hole. Set up your timer for two minutes.
Then is to place the test tubes in front of a beaker full of water so that it is not direct light, and turn on the lamp. Then is to record the data every 5 minutes for 20
The boiling tubes were then placed in a water bath with a fixed temperature at 40˚C.