I made this makeup bag in Textiles, It's a black and white striped bag with a pink pom pom attached to the zipper as pictured below, It can open and close easily and the same pattern on the outside is on the inside.
Wednesday, June 26, 2019
Monday, June 17, 2019
Metals and Acids
Testing for hydrogen gas
Aims: to show that hydrogen gas is produced when a metal reacts with acids.
Equipment: A test tube, a boiling tube, wooden splint, a bottle of acid, a piece of metal, safety glasses.
Method: 1. Add your sample of metal to your test tube. Add 2 mL of acid.
2. Carefully invert the boiling tube above the test tube containing the metal and acid.
3. Hold the test tubes together for a few minutes, allowing time for the inverted boiling tube to fill with gas.
4. When you think the tube is full, your lab partner should light a wooden splint.
5. Carefully, but quickly, tilt the boiling tube full of gas upwards and insert the burning splint into the mouth of the test tube.
Observations -
I made Hydrogen gas which reacted to the metal and the wooden burning split and it worked with making the reaction.
When you added the burning wooden splint into the gas filled test tube it was a boom kinda screechy sound.
I made Hydrogen gas which reacted to the metal and the wooden burning split and it worked with making the reaction.
When you added the burning wooden splint into the gas filled test tube it was a boom kinda screechy sound.
Tuesday, June 4, 2019
Making Salts
Making Salts.
Aim: To produce copper sulfate by reacting copper oxide with an acid.
Equipment: Copper oxide powder, dilute (0.5 mol L-1) sulfric acid, 50 mL measuring cylinder, two 100 mL beakers, Bunsen burner, tripod, gauze, funnel, filter paper, thermometer, spatula, evaporating basin, stirring rod.
Method
1. Add 20 mL of sulfuric acid to 100 mL beaker. Heat the acid until it reaches 70 c.
Turn off your bunsen burner.
2. Once heated, use a spatula to add pea-sized portions of copper oxide to the beaker, Stir the mixture for 30 seconds.
3. Repeat step 2 until no more will dissolve, Allow the beaker to cool.
4. Fold the filter paper and place it in the funnel. Place the filter funnel into the second beaker.
5. Make sure the beaker is cool enough to hold at top, The contents should still be hot, You may need you teacher to complete this step.
6. Gently swirl the contents of the beaker to mix, and then pour into the filter paper in the funnel, Allow to filter through.
7. Rinse the beaker you used to heat mixture previously, and place it back on top of tripod filled with 50-60 mL of water.
8. Place the evaporating basin on top of the beaker and carefully pour some of the solution from the beaker into the evaporating basin.
9. Gently heat the beaker until the solution in the evaporating basin has reduced by half.
10. Leave the evaporating basin to cool. Once cool, move the evaporating basin to a warm place where it will not be disturbed, (i.e a window-sill) and observe over the next few days, blue copper sulfate crystals should form.
Aim: To produce copper sulfate by reacting copper oxide with an acid.
Equipment: Copper oxide powder, dilute (0.5 mol L-1) sulfric acid, 50 mL measuring cylinder, two 100 mL beakers, Bunsen burner, tripod, gauze, funnel, filter paper, thermometer, spatula, evaporating basin, stirring rod.
Method
1. Add 20 mL of sulfuric acid to 100 mL beaker. Heat the acid until it reaches 70 c.
Turn off your bunsen burner.
2. Once heated, use a spatula to add pea-sized portions of copper oxide to the beaker, Stir the mixture for 30 seconds.
3. Repeat step 2 until no more will dissolve, Allow the beaker to cool.
4. Fold the filter paper and place it in the funnel. Place the filter funnel into the second beaker.
5. Make sure the beaker is cool enough to hold at top, The contents should still be hot, You may need you teacher to complete this step.
6. Gently swirl the contents of the beaker to mix, and then pour into the filter paper in the funnel, Allow to filter through.
7. Rinse the beaker you used to heat mixture previously, and place it back on top of tripod filled with 50-60 mL of water.
8. Place the evaporating basin on top of the beaker and carefully pour some of the solution from the beaker into the evaporating basin.
9. Gently heat the beaker until the solution in the evaporating basin has reduced by half.
10. Leave the evaporating basin to cool. Once cool, move the evaporating basin to a warm place where it will not be disturbed, (i.e a window-sill) and observe over the next few days, blue copper sulfate crystals should form.
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