Useful home science tips

Useful home science tips

Battery

Bulb holder 1

Bulb 1

Wire 30cm

Plastic Lid 1

Blades 2

Water 3tsp

Salt 1tsp

Potato 1

Attach wire to the holder

Attach blades by winding the tips

Insert bulb into holder

Add water to glass bowl

Add salt and dissolve 

Place lid for base support 

Place potato on base

Insert one blade at top

Insert other blade close to solution level 

Bulb lights up

Solar eclipse viewer

Solar filter sheet

Cardboard box 

White sheet of paper 

Cellotape 

Cut the sides of the box 6cm above base

Cut rectangle in the double base leaving some margin

Cut out rectangle from solar sheet

Cut same size rectangle from paper

Cut two small squares from rectangle leaving some margin

Slide paper and solar rectangles into base from side

Cut slots in the sides to fit over ears

Analglyph glasses 

White chart paper

Red gelatin paper 

Blue gelatin paper 

Pencil

Eraser

Paper cutter 

Glue

Cellotape 

Cut out two rectangles from chart paper

Fold the rectangle 

Cut out two tiny rectangles leaving some margin

Cut tiny notch to fit on nose

Fold other paper rectangle

Draw the spectacle handles

Cut out the handles 

Tape one handle on each side with cellotape

Stick the margins and center leaving gap at sides

Cut one small blue rectangle 

Insert blue rectangle from one side

Cut one small red rectangle

Insert red rectangle from other side

Hologram projector 

CD case / transparency sheet

Scale / graph sheet

Pen

Scissors 

Super glue

Glass cutter

Smartphone 

Cut 4 trapezium 1x3.5x6 cm

Tape the edges to form pyramid 

Place the projector on smartphone screen

Food colors

Red beet/turmeric+baking powder

Orange carrot/kesar/mango/turmeric+lemon/purple cabbage+vinegar 

Green kiwi/palak

Yellow pineapple/turmeric

Purple jamun/black grapes/purple cabbage

Blue blueberries/purple cabbage+baking soda

Pink strawberry/purple cabbage+lemon

White lichi/milk/titanium dioxide 

Black smoke carbon

Soda volcano

Baking powder 3tsp

Warm water 3tbsp

Vinegar 2tsp

Red food color 1/2tsp

Stick plastic bottle at the center of plastic tray

Cover crumpled newspaper

Cover with clay

Paint lava effects 

Add baking powder to bottle

Add color and water

Add vinegar 

Jelly beads

Sabudana

Water

Vinegar

Food colors

Rocket car

Big bottle of Coca cola

Skate

Mentos

  

Tie the bottle to skate

Make hole in lid

Add mentos

Close lid

Place on smooth surface 

Crystals

Dettol

Fevi quik

Snow

Diapers powder/sodium polyacrylate

Water

Foam train

Colgate toothpaste 3

Coca cola 2

Vinegar 1glass

Gas torch

Calcium carbonate

Water

Photo transfer onto glass jar

Apply clear glue or gel gloss on photo

Stick on jar

Leave overnight 

Wet the photo with water 

Scrape off the paper

Photo transfer onto ceramic plate

Fit on photo mug with cellotape

Run clothes iron on the photo

Remove the photo

Photo transfer onto ceramic mug

Fit on photo mug with cellotape

Wrap with tissue paper 

Wrap with jute twine

Preheat pan

Pour sand

Place wire stand

Place two forks

Place mug

Place lid

Cook 10-15min

Overturn the mug

Place lid

Cook 10-15min

Remove jute twine,tissue paper and photo

Smoky Tornado 

Crayons 3

Sugar 1/3 glass

Baking Soda 1/3 glass

Saltpeter 1/3 glass

Melt the crayons in frying pan

Add saltpeter, sugar, soda

Mix and cool the mixture 

Open the tin with can opener 

Cut a cardboard disc of the size of lid

Perforate the disc

Pour the mixture into Coca Cola tin

Seal the opening of tin with disc

Insert long wick

Light the wick by placing tin in open 

Sparkler

Incense stick/metal wire

Baking soda 

Pepper powder 

Chilli powder

Rock salt

Castor oil 

Colors

Cracker Bomb

Match stick head powder

Match box side powder

Baking powder 

Paper wrapped 

Wick

Mix the powders 

Wrap in paper tightly in multi layers

Insert wick

Ice

Baking soda 500gm

Vinegar 500ml

Water 100ml

Mix soda and vinegar and leave for 4hrs

Add water and cook

Pour the solution in petri dish

The solution crystallizes into ice instantly 

Salt + baking soda + water = ice

Earth quake

Clay

Magnets 2

Writing pad

Radium sheet 1

transparency sheet 2

Magnetic dust powder 2tsp

Toothpick/Earbud 1

Kids writing pad 

Plastic sheet

Polythin sheet

Earbud

Plastic wire

Tsunami 

I plastic tray

I bowl

Sand

Water

Rope

Stone

The periodic motion of stone in water creates big ripples in water that wash on the sandy shore as tsunami 

Whirlpool 

Clear plastic Bottles 2

Water

Fill one bottle with water

Hold the bottle upside down onto the other bottle 

Note the whirlpool 

Recycled paper 

Newspaper bits

Water

Cloth screen frame+cloth frame +frame

Soak paper in hot water 

Grind in mixie

Wet the screen 

Pour the paper pulp

Remove top frame

Squeeze onto wooden board 

Roll with roll pin 

Remove cloth frame

Roll with roll pin

Dry in sun for 2 days

Overturn the paper with the help of paper knife 

Dry in sun for 1day

Green house 

Green cellophane/gelatin paper

Bamboo sticks 3ft 6

Bamboo sticks 6ft 2

Perpetual motion 

Circular cardboard box with hole at center 

cardboard strips 24

Marbles 24

Mount

Avalanche 

ice cubes

Salt

Stack the ice cubes in the form of pyramid

Drop some salt

Some ice melts into and causes avalanche 

Invisible letters

Lemon 1/2

Tealight candle 1

Toothpick 1

Paper

Dip the toothpick in lemon juice and write on paper

Light the candle

Hold the paper on the candle and heat and move

The secret message becomes visible 

Xerox

Paper sheet 2

Water

Pencil

Mirror

Wet paper 

Place on mirror 

Place dry sheet on it 

Write message with pencil 

Dry the paper

Dip in water

Message becomes visible 

Invisible message 

Highlighter pen 1

Paper sheet

Bowl

Water

Remove the nib and refill of pen

Soak in bowl of water

Write with it on paper

View in ultraviolet light 

The message becomes visible 

Erase highlighter 

Highlighter pen

Printed paper sheet

Lemon/rubbing alcohol

Ear bud

Highlight a line of text

Dip ear bud in lemon juice/rubbing alcohol

Clean the highlighter ink 

Alternative 

Use white highlighter over it :)

Highlighter ink 

Water

Quinine 

Soap colors

Solar panel flexible 

Transparency 12x20cm

Copper sheet foil

Doped silicon solvent

Fevicol

Rubbing alcohol 

Ear bud

Cut the copper strips 6x0.5cm

Clean the strips with alcohol 

Fold the transparency sheet into 12x10cm

Open the fold

Stick the strips alternately extending 

Attach the side strips

Apply doped silicon with ear bud in the gaps 

Close the cover

Solder wire to contacts 

Place in sunlight 

Test with multimeter

Gives up-to 3V

Pattern 

   |------------------------    |

   |   -------------------------|

   |-------------------------   |

   |   -------------------------|

   +                                -

Organic solar cell 

Glass slides 2

Alcohol for cleaning slides

Fluorine-doped Tin oxide/indium‐doped tin oxide as transparent anode gives conductive glass looking glossy

Titania/Titanium dioxide +vinegar as activator 

Raspberry juice as dye

Iodide solution as electrolyte

Platinum as cathode 

Iodide solution 

Potassium iodide (KI) is prepared by reacting iodine with a hot solution of potassium hydroxide. It is mainly used in the form of a saturated solution, 100 g of potassium iodide to 100 ml of water. This equates to approximately 50 mg/drop. The solution is usually added to water, fruit juice or milk before drinking.

Glow paint

Strontium aluminate powder

Clear nail polish 20ml

Mix the ingredients 

Pour in nail polish bottle

Bleach

Titanium dioxide 

Vinegar

Jingle

Bimetallic spring

Tiny metal ball

Mount

Lighter

Attach the spring to mount

Place metal ball at center 

Heat at the bottom 

The coil unwinds when heated and winds when cooled producing jingle

Bleach action

Iodide solution 

Water

Bleach

Add iodide solution to water

The solution turns brown 

Add bleach solution to above

The solution turns clear

Antiseptic gauze 

Orange peel

Plastic scale

Wash hands and dry

Squeeze the peel on to scale

Stick to Palm and lift repeatedly 

The gauze fibres form

Tincture of iodine, iodine tincture, or weak iodine solution is an antiseptic. It is usually 2–7% elemental iodine, along with potassium iodide or sodium iodide, dissolved in a mixture of ethanol and water. 

Magnetic fluid

Canon toner black powder/iron oxide powder

Oil

Magnet for testing 

Mix the ingredients to form ferroflid

Waterfall

Big plastic bottle

Pipe

Water

Mount

Cut open the bottom of bottle

Attach pipe to other end 

Mount bottle and pipe 

Fountain flows continuously 

Water pump 

Bottle 

Long Straw (1straw +1flexi straw)

Flexi straw 1

Mount

Tub

Pierce the bottle at top

To lengthen straw slice the tip of straw

Slide in the second straw 

Seal by glue gun 

Insert long straw

Seal by glue gun 

Pierce the bottle at bottom on other side 

Insert flexi straw

Seal by glue gun 

Place mount in tub

Place bottle on mount

Pour water in bottle 

Close the cap airtight 

The water pump works continuously 

Siphon 

Tube

Plastic glass 2

Block

Pipette

Water

Blue soap color

Fill one glass with water

Add color and stir

Place the glass on block at height 

Dip tube in liquid to the bottom 

Pipette out air from tube to form bubbles 

The liquid will rise in tube

Dip the other end of siphon in empty glass

The liquid from the glass at top flows to the glass at bottom by siphon action 

Kaleidoscope 

Mirror strips 3 (10x3cm)

Mirror triangle

Transparency sheet 

Cellotape

Chart paper 

Glass bangle bits

Glue

Tape the three mirror strips with cellotape

Tape mirror triangle to close one end

Add some bangle bits

Cut out triangle from chart paper

Cut 0.75cm diameter hole at center 

Cut 1cm diameter disc from transparency 

Stick on the hole in paper

Tape to close other end

Cover with chart paper

Baking soda alkaline 

Lemon acidic 

Baking soda+lemon 

NaOH + HCl = NaCl + H2O

Virtual reality glasses

Cardboard box 

Biconvex lens 2 (25mm diameter and 45mm focal length) /water lens2 

Elastic cord 15cm

Cellotape

Scissors

Glue

Smartphone

Cut sides of the box bit above the bottom 

Cut slot at middle of bottom 

Cut two rectangles of the size of the bottom 

with two extensions 

Make two lens holes for eyes and notch for nose

Stick elastic to sides to fit on eyes

Make slot on side close to bottom to slide in smartphone

Stick the lenses to cardboard 

Stick the 2nd cardboard to hold lens in place 

Cut two slots in the sides 45mm away from the smartphone slot

Insert the smartphone 

Insert the lens holder into slots

Start virtual reality video and view

Water lens

Plastic bottle 

Glue

Water

Syringe

Cut four discs from curved surface of bottle 

Stick two discs leaving tiny hole

Fill with water with syringe 

Close the hole with glue

Periscope

Rectangular cardboard box 

Mirrors square 2

Transparency sheet 

Glue

Cellotape

Cut square hole at top on left

Cut square hole at bottom on right 

Stick mirror at top right corner at 45deg  

Stick mirror at bottom left corner at 45deg 

Cut two squares of transparency sheet the size of openings

Tape the squares to close the openings with 

cellotape

Free energy generator

CD

Nails

Two bottles 

Glue gun

Drill

Two motors

Fan

Wire

Magnet

Glue

Stick the nail heads on the CD along the outer rim

Cut the bottle tops one slightly shorter length 

Drill big hole in one bottle cap

Stick one motor with glue gun to cap

Screw in the cap to shorter mount

Drill tiny hole in one cap

Stick the cap to CD at center 

Insert the CD into motor 

Stick other motor horizontal to other mount

Connect two motors with wire

Connect fan to horizontal motor

Rotate the CD

Hold magnet close to rotating CD

The fan rotates by free energy principal 

Telescope 

Cardboard tube small (length 30cm Dia 6cm)

Cardboard tube medium (length 30cm Dia 6.4cm)

Cardboard tube large (length 30cm Dia 6.8cm)

Cardboard disc small (Dia 6)

Cardboard disc large (Dia 6.8)

Concave lens (focal length 4cm Dia 1.8cm)

Concavoconvex lens (focal length 70cm Dia 6.7cm)

Glue

Papercutter

Slide the small tube into medium tube and medium tube into large tube and slide to make telescopic

Drill a hole Dia 5cm into small disc at center 

Stick eyepiece concave lens on hole

Drill a hole Dia 6cm into large disc at center 

Stick objective concavoconvex lens on hole

Stick disc with eyepiece to small end

Stick disc with objective to large end

Adjust the length to get clear image

Solar cooker 

Refkective sheet

Metal bowl

Paper clips

Scissors 

Polythin bag

Metal jar 

Cut a hemisphere Dia 30cm at center of side of reflective sheet

To make solar flare make funnel

Fasten the open ends with paper clips

Place in metal bowl

Place in sun

Fill jar with water

Place at center of solar cooker

The water boils within 1hr

Microscope 

Magnifying glass lens

Round mirror 

Tissue roll 2

Mount

Clamps 3

Transparency 

Earbud

Cellotape

Glue

Stick magnifying glass to one end of tissue roll

Cut two rectangles from cardboard leaving one inch margin

Cut rectangle from transparency 

Stick the two cardboard rectangles leaving gap from side

Insert the transparency into slide holder

Cut 2 inch ring from tissue roll

Drill two holes diametrically opposite 

Tape earbud behind mirror 

Insert the mirror into mirror holder

Mount the lens holder, the slide holder and the  mirror holder with clamps to form microscope

Onion battery 

Onion 

Vinegar

Baking powder 

Bulb

Knife

Cut onion into half

Drill hole in onion

Pour vinegar

Add baking powder 

Screw in the bulb

The bulb glows 

Homopolar motor

Battery

Magnets disc 3

Copper wire

Make a loop of the below shape from wire

Attach three magnets to negative terminal 

Place vertical with magnets as base

Place the loop over the battery dangling on the support

The loop starts spinning 

Shape

---------v--------

|                   |

|                   |

---------O--------

Alternate shape

Helical with curved tip for support at one end and loop at other end

C-➿➿➿➿➿➿-O