Recall the names of the some of the laboratory acids and bases that you know. Write down their names in and identify metal/non-metal present in them, which form oxides when react with oxygen. Take the help of your teacher.

In table-3 write the names of the organisms in the appropriate box according to where i they can be found. You could put the name of one organism in more than one column. If you put the organism in the colon in 'some other place', try to mention the place where you could find it.Some examples are filled in to help you. Copy the table 3 in your notebook. Try to enhance the list as much as you can. In which column will you put a frog?

In table-3 write the names of the organisms in the appropriate box according to where i they can be found. You could put the name of one organism in more than one column. If you put the organism in the colon in 'some other place', try to mention the place where you could find it.Some examples are filled in to help you. Copy the table 3 in your notebook. Try to enhance the list as much as you can. How many organisms are present in more than one column? Why did you place them here?

Group-II elements react with water evolving hydrogen. This reactivity increases down the group from Be to Ba. They displace hydrogen from acids except Be with oxygen Be, Mg and Ca form monoxides while Sr, Ba and Ra form peroxides on heating with hydrogen, they form metal hydrides except Be with carbon, they form carbides on heating such as acetylides, methanides and allylides. When heated with halogens they form halides having different properties. Which of the following alkaline earth metal hydroxide is amphoteric in character ?

Group-II elements react with water evolving hydrogen. This reactivity increases down the group from Be to Ba. They displace hydrogen from acids except Be with oxygen Be, Mg and Ca form monoxides while Sr, Ba and Ra form peroxides on heating with hydrogen, they form metal hydrides except Be with carbon, they form carbides on heating such as acetylides, methanides and allylides. When heated with halogens they form halides having different properties. Ionic hydride is not formed by

Group-II elements react with water evolving hydrogen. This reactivity increases down the group from Be to Ba. They displace hydrogen from acids except Be with oxygen Be, Mg and Ca form monoxides while Sr, Ba and Ra form peroxides on heating with hydrogen, they form metal hydrides except Be with carbon, they form carbides on heating such as acetylides, methanides and allylides. When heated with halogens they form halides having different properties. Least ionic carbide is formed by

Pictures of different kinds of plants and animals which live in ponds and lakes in our surroundings are given below for you. Try to know their local names with the help of your teacher and write them in your note book.

After completion of metals and non metals chapter. Raheem understood that metals are hard and non metals are soft. During the discussion with his brother he came to know that Diamond is a hardest material and it is a non metal. Similarly mercury is a soft material and it is a metal. These findings from the discussion raised some questions in Raheem’s mind. Can you guess those questions? Write them. (AS_(2))

You came to know that the Diamond is a hardest material and it is a non metal and similarly. Mercury is a soft material and it is a metal. Write down the questions raised in your mind.

Some metals reacts oxygen to form their oxides. It is serious problem. Give some examples for oxidation of metals and write balanced equations.

Form a group with 4 to 5 of your classmates, visit nearby field, discuss with farmers about diseases affected by, and how to control them. If you do not know the name of the disease, write its local name or its characters.