Separating Mixtures 2

Separating Mixtures

​Identify the benefits of handpicking, sieving, using magnets and decantation;

by Rochell Cabahug

Multiple Choice

What method will you used to separate metallic materials mixed in the trash found in the community?

• decantation

• evaporation

• use of magnet

• filtration

Multiple Choice

We usually experiencing typhoon and it brings heavy downpour resulting to flood in low lying areas. Plastics and garbage are everywhere, suggest one way to minimize flood in the community.

• put a filter that traps plastics and garbage in the drainage to easily collect the trashes

• remind people to keep safe in times of a calamity

• let the barangay officials do their job to clean the drainage.

• do nothing

Multiple Choice

If you are in a remote area and water coming from the faucet is muddy. What will you do to make the water usable?

• Use the method of evaporation

• Apply the use of filtration and distillation

• Use a magnet to separate some minerals in the water.

• All of the above

Multiple Choice

We commonly use table salt in cooking. Table salt is produced through what process of separating mixtures?

• decantation

• evaporation

• use of magnet

• filtration

Multiple Choice

Oil spills usually happened in the ocean by huge vessels. What method could be used to separate oil from the water?

• Decanting/scooping of oil from the water.

• Evaporating the oil from the ocean

• Conduct the process of distillation

• Both A and B

Multiple Choice

Candy making can be done with the use of heat by removing the excess water from the mixture. What method of separating mixture is used?

• filtration

• decantation

• use of magnet

• evaporation

Multiple Choice

This method is used to separate the good from the bad seeds. What method of separating mixture is used?

• use of magnet

• handpicking

• evaporation

• filtration

Multiple Choice

Community near coastal areas survive through this livelihood except _______________.

• Making table salt

• Using seashells in decorating

• Fishing

• Crafting vases

Multiple Choice

All of the following are the benefits of separating mixture which is NOT included?

• Segregating waste

• Water distillation

• Salt making

• Painting walls

Multiple Choice

What will you do to minimize waste in the community?

• Reuse materials found in the community

• Minimize the use of plastics

• Separate biodegradable and non-biodegradable materials

• All of the above

​What is it

​Using your bare hands, you will be able to separate the components of different sizes, colors, and shapes. For example, when you have a basket full of colored clothes. You have to separate clothes with different colors from the white ones to avoid discoloration. You do the same method when you separate all the coins inside a piggy bank, according to their value so

that, it will be easy for you to count them all. Through handpicking, you an easily get and see the things you need. You can simply separate or take out the impurities from the mixture by just using your hand and gets your work done.

​

​Mixtures with big and fine components can be separated through sieving. This involves using a sieve, strainer or a big screen to separate the components of mixtures. At home, when your mother bakes breads and cakes, she uses a sieve with tiny holes to make the flour pure and refine so that it will be smooth and lighter when mixing it with the other ingredients.

​Metals are attracted to magnets, while non-metals are not. The use of magnets is a good way to separate metals from non- metals. Big junkshops used big magnets to separate scrap metals from other non-metal components. Recycling scrap metals is a good business by

turning it into cash. They also help save the environment as the junk owners practice segregation with recyclables separated by type. Many of the substances we use every day were actually once part of a mixture. Someone somewhere separated that substance from the mixture so we could use it. It turns out that many components aren't found in nature in their pure form, but are found as parts of mixtures. Separating substances from mixtures is an important part of our daily activities in order to get the important components that we need.

​Decantation is a technique used in separating less dense substance from a denser one. When the components are separated, the less dense substance can be removed by scooping using a spoon or it can be removed by slowly pouring out the less dense substance. The purpose of these two techniques may be either to produce a clean decant or purified water. It gives benefits to us especially in the community like our home or school.

​Oil and Water Experiment

You will need:

• Glass jam jars (with secure lids if you want to shake them)

• Jug of water

• Vegetable oil

• Dishwashing detergent

• Food colouring

• Small container

• Syringes or pipettes

• A cloth for accidental spills

• Optional: Table salt

​Put one cup of water into your glass jar.

​2. Pour half a cup of vegetable oil on top of the water in the jar.

​3. Stop and observe. squirt some coloured detergent into your oil and water filled jar.

Open Ended

Does the oil mix with the water?

Screw the lid onto the jar and shake it….

Open Ended

​an you make the oil and water  mix?

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​4. Mix a generous squirt of dishwashing detergent with some food colouring in the separate small container.

​5. Using a dropper or a syringe squirt some coloured detergent into your oil and water filled jar

​6. Watch what happens….. you should see a lava lamp like affect with bubbles of colour falling through the mixture.

​

​Repeat this progress as many times as you like.

7. If you would like to see a different reaction try pouring a teaspoon of salt into the mixture and watch what happens.

Open Ended

Oil and water experiment explanation: What is happening?

Open Ended

In our daily living, we use a number of mixtures and sometimes we need to separate useful components from mixtures which can be performed through handpicking, sieving and using magnets. Can you tell which household chores you do at home that need separating ofmixtures and their benefits?

Multiple Choice

Which activities at home can we apply the method of picking/handpicking?

• A. segregating the laundry

• B. scrubbing the floor

• C. taking a bath

• D. watering the plants

Multiple Choice

Which of the following mixtures could NOT be separated by SIEVING?

• A. Chalk and chalk dust

• B. Needles and stones

• C. Sand and pebbles

• D. Sugar and flour

Multiple Choice

If Anna wants to get iron fillings out of the sand, what practical applications she will use to separate these two solids?

• A. Handpicking

• B. Filtration

• C. Sieving

• D. Magnetism

Multiple Choice

Mila’s grandmother handed her a sewing kit full of buttons with different colours and

sizes. Her grandmother asked if she can help organize the things she will use to sew

ripped clothes. It is very hard for her grandmother to see and pick the small needles

using her hands. How would Mila help her grandmother?

• A. Mila will use filter paper to gather all small needles.

• B. Mila will use her own hands to collect small needles by herself.

• C. Mila will use magnets to hold and collect small needles.

• D. Mila will pour all the things inside the sewing kit and separate them all using

  decantation method.

Multiple Choice

5. Which of the following is not a benefit of decantation?

• A. Removal of unwanted liquid from a mixture.

• B. To obtain drinkable and potable water from a dirty sample.

• C. To carried out where the dirty water is separated from the clean ones.

• D. To purify drinking water of unwanted chemicals and minerals such as salt.