A tomato, brinjal, potato, iron nail, sponge, wood, stone, leaf, piece of chalk and paper are given. Predict which of them sink or float in water. Record your predictions in table.

Which of the following sinks in water? i) Stone ii)Paper iii)Tomato iv)Egg

Iron sinks in water, wood floats in water. If we tie an iron piece to the same volume of wood piece, and dropped it water, would it sink or float ? Make a guess and find out whether yours gucess is correct or wrong with an experiment. Give reasins.

Take vinegar, lemon juice, soapy water, baking soda in different vessels. Pur beetroot pieces in the vessels. Predict what happens. Verify your prediction by observing the changes. After 10 minutes, 30 minutes, 60 minutes record your observations. What do you conclude?

Take five beakers with water. Take small quantities of sugar, salt, chalk powder, sand and sawdust. Add each material to separate beakers and stir. Observe the changes and record your observations in the given table.

Collect the salt samples like sodium chloride, aluminium chloride, copper sulphate, sodium acetate, ammonium chloride, sodium hydrogen carbonate and sodium carbonate. Dissolve them in distilled water. Check the action of these solutions with litmus papers. Find the pH using pH paper. Classify them into acidic, basic or neutral salts. Identify the acid and base used to form the above salts. Record your observations in table

Collect some solid materials such as ghee, wax, sand, sugar, salt, haldi, dal, plastic, wood, iron nails. Take a bucketful of water and a beaker. Now try to discover the following Which materials sink in water ?

1. Collect some solid materials such as ghee, wax, sand, sugar, salt, haldi, dal, plastic, wood, iron nails. Take a bucketful of water and a beaker. Now try to discover the following :Which materials float on water

Take some water in a wide mouthed bowl. Put an iron nail in it. What do you observe ? Put an empty iron tin in that bowl. What do you observe ?Also try to observe whether a wooden piece floats on water. What happens when a wooden bowl is dipped in water ? what is your conclusion from the above activity?

In the given picture there is a lime water in A and B test tubes. A boy is breathing out the air into the test tubes. Predict your answers for the following : In which test tube did the lime water turn milky after you blew in and sucked out air ?

Given are some materials. Predict them whether they float or sink. write your findings. Tomato, Brinjal, Potato, Iron nail, Sponge, Wood, Stone, leaf , Piece of chalk.