Time of the year. Materials:
Activity Sheet
Paper and Pen
Pictures of Constellations
Procedure:
1. Carefully analyze the pictures of stars and constellations.
2. Complete the table below by giving the month of appearance and season of stars/ constellations.
Write the month of appearance of stars/ constellations given by Matigsalug Manobo.
Table 1. Stars/Constellations seen on different month of the year.
Season
PICTURES
Stars/Constellation
Month of
Appearance
1.
2.
3.
Onou the unter
4.
5.​

answer : one can design an experiment using a liquid and an additive that can be added to the liquid and observe the chemical changes in the reaction species.

one would need a beaker which is filled with a known amount of the liquid in which thermometer is placed to measure the temperature changes; after addition of the additive to the liquid solution one can note down the temperature change and find whether the reaction is endothermic or exothermic in nature. by subtracting the initial temperature value with the final temperature one can find the temperature changes.

various combinations of liquid and additive can be used. liquid in this case can be a known quantity of water and additives can be epsom salt or without epsom salt the experiment can be conducted to notice the changes. water and ice, hydrogen peroxide and dry yeast, vinegar and baking soda,etc.