WLW Day # 4: Water as Solvent

Science Experiment # 3: Water as Solvent

Materials needed:

* chalk
* filter paper
* heat source
* lime powder or tablets
* phenolphthalein
* 2 pyrex beakers




Instructions:

* Crush some chalk
* Mix chalk into water in a beaker

* Pour the mixture through filter paper. The water appears to be "pure".
* Boil the water or let it evaporate away.

Q: What is left?

* In a beaker, mix lime powder or tablets and water.
* Filter until clear.
* Fill another container with water.
* Obtain some phenolpthalein (Hln or phph) and add a few drops to a glass of "pure" water.
* Add a few drops to the water mixed with lime.

  Q: What are the results?
  Q Relate to hydroponic gardening (growing plants in water instead of soil)?

What we learned:

* Water's power to dissolve substances (e.g. chalk + water)
* Substances can be transported when dissolved in water  (e.g. chalk + water or line + water)
* Water can carry out chemical reactions (e.g. lime+water+Hln)
* A clear water does not always mean "pure" water. It may carry substances or minerals.
* Application: Water passing through soil dissolves some of the minerals and transports them through the soil to plants and animals, and contributes to the salinity of the sea.

WLW Day 3: Thermal Properties of Water

Experiment # 2: Thermal Properties of Water

Materials Needed:

* 2 flat aluminum cake pans (disposable)
* sand
* thermometer
* a liter measure
* aluminum foil

Instructions:
* Punch holes in the bottom of one cake pan.
* Fill it with hot sand and cover with aluminum foil (shiny surface towards the sand)
* Place the thermometer in the sand. Record the temperature of the sand.
* Obtain one liter of cool water.
* Record the temperature.
* Pour it over the sand and collect the water as it drains out.
* Immediately record the temperature of the sand and the water collected.
* Record your results in a chart.

Q1: What is your explanation of the results?
Q2: How does the answer to Q1 apply to your blood circulating through your body when you are exercising?

What we learned:

 * Heat is transferred to water.
 * Water absorbs the heat.
 * Application: Perspiration cools our body as it absorbs the heat. How?

blood transfers heat from our muscles to ----> skin,  produces ---> perspiration ----> helps cool our body

WLW Day 2: Ionic Bonding

Science experiments time. . .

Experiment # 1: Ionic Bonding

Materials Needed:

2 inflated balloons                                          

thread                                                             

string                                                              

piece of material (nylon, wool, or fur)

nylon stocking

piece of white paper

Instructions:

* Tie the ends of the thread to the knotted ends of the balloons, and tie the middle of the thread to the middle of the string.

* Rub the balloons with a piece of material, and then pick them up by holding the ends of the string and stretching it to its full length.

   Q: What happens to the balloons when they are close together?

    Explanation: The material used to rub the balloons transferred electrons to the balloons.

   Q: What electrical charge does the balloon have now?

* Cut 2 3X12 inch strips of material from the nylon stocking.

* Place both strips on a piece of white paper and rub them briskly in your hand.

* With your fingers lift the 2pcs of nylon and hold them side-by-side.

    

    Q: What happened? Why?

* Now bring one of the nylon strips near one of the balloons.

   Q: What happened?

 What we learned:

 * atoms with the same charge, repel

 * atoms with opposite charge, attract/stick together = Ionic bond

    

Working Long Weekend Day 1 : Atomic Model

A full-packed day we had. . . reading. . . activities. . . and tests. . .


Bible was about Abraham and Isaac. 

Language Arts was about finishing off spelling noun plurals and suffixes lesson . 

Science, on the other hand, was about atoms and molecules. H₂O . . . CO₂ . . . protons, neutrons, electrons, atomic numbers. . .

A clever way of making an atomic model. . . pins & pin cushion

!

 . . . and accidentally, an advance study on food preparation for TLE and our extra Homeroom lesson.

All because Gia got hungry =)

Tomorrow is yet again, another learning day for us. . .

 Just in case some of you still have doubts about homeschooling, or has misconceptions about it, let me share this very appropriate image. . .

Enjoy the long weekend everyone!

We are almost ready. . . for Science

Made that trip to Sta. Cruz, Manila last week to scour for our Science experiment materials.

Our stash is almost complete for Unit 2 and we are ready to go! Gia and I can't wait to start with our Science experiments and activities. =)

The list of materials ( excluding common household items) for AOP Lifepac Science for Grade 10 consists of:

• Alligator clip leads, 2/pk
• Alpha Omega Biology Slide Set

  Ascaris mitosis, onion root tip, Diatoms, frog ovary, frog sperm, human blood smear, human bone, kidney section, muscle types section, motor neuron smear, Spirogyra, and Ulva microscope slides

• Battery, 6 volt, alkaline
• Beaker, glass, 250 ml
• Biuret reagent, 30 ml
• Calcium hydroxide, 30 g (lime)
• Chalk (calcium carbonate), 12/pack
• Cups & lids, 8 oz plastic, 3/pack
• Electrolysis electrodes (2)
• Filter paper, 10/pkg
• Forceps, stainless steel
• Funnel, plastic, 65 mm dia.
• Glucose test strips, 50 pack
• Graduated cylinder, plastic, 10 ml
• Hydrochloric acid, 30 ml
• Iodine solution (Lugol's) 30ml
• Lab apron, economy
• Litmus paper, blue, 100 strips
• Litmus paper, red, 100 strips
• Magnifier, tripod, 10X
• Methylene blue, 1%, 15 ml
• Osmosis Set
• P.T.C. test paper, 100/vial
• Petri dish, plastic, 2/pk
• Phenolphthalein solution, 15ml
• Pipet (medicine dropper)
• Potassium permanganate, 30 g
• Probe & seeker, chrome, 6"
• Protozoa Hatchery Kit
• Razor blade, single edge
• Safety gloves, size 8-8½ med.
• Safety goggles, full-size
• Sand, coarse, 1 lb.
• Scissors, dissecting, 4½"
• Screen, 20 mesh, steel, 4x4"
• Seeds, grass, 6 g pack
• Seeds, lima bean, 15 g pack
• Seeds, marigold, 300 mg pack
• Seeds, radish, 4 g pack
• Basic microscope slide set: 12 plain slides, 2 concave slides, coverslips, and storage box
• Sodium sulfate, 30 g
• Stirring rod, glass, 6"
• Teasing needle, straight
• Test tube rack, 6 holes
• Test tubes, small 13x100 mm
• Test tubes, x-large 19x150 mm
• Thermometer, Celsius, 12"

Yes! a very long list of items that. . . after the school year, we will have our own Science Laboratory! LOL!

Hopefully we will be able to complete them before the end of the school year. One Unit at a time. :)

Unit 2 (Basis of Life) will be about : 

* molecular models
* ionic and covalent bonding
* inorganic compounds experiment about solvent, thermal properties of water, acids,  bases and salts
* chemical reactions like electrolysis and using yeasts
* organic compounds like testing for starch, sugar, oil and protein in some food
* and,  properties of enzymes

So here's our stash (in photo) :

Grade 10 Unit 2 materials

stored securely (p.s. we need a bigger container soon)

Oh how this simple exercise of gathering all the materials reminds me of how I love Science back when I was in school. 

Rocking Science we should be!

When it rains. . .creativity strikes!

While the whole Metro is inundated with torrential rain, and classes and offices were suspended, what can one do aside from monitoring the news. . . ?

. . . of course! Just like any homeschooling families, we had "school" after lunch. . . after sleeping in until around lunchtime. . .

Filipino. . . History. . .TLE. . . that is all we can muster to do for today, as we both fight off the temptation of just "lazying around".  =)

After a bowl of her favorite sour cream flavored popcorn, Gia's creative juices miraculously appeared!. . . and,  she finally finished decorating her larger notice board.