Available Answers

1. 1.

   Tick (√) the correct options:

   1. Grounded glass is a/an _______________ material.
      1. soft 
      2. opaque
      3. translucent
      4. transparent
   2. Which of the following is soluble in water?
      1. sand
      2. plastic
      3. common salt
      4. chalk powder
   3. Which of the following is insoluble in water?
      1. glycerine
      2. vinegar
      3. kerosene
      4. alcohol
   4. Which of the following does not float on water?
      1. stone
      2. feather
      3. paper
      4. coconut oil
   5. Which of the following is made up of mental?
      1. book
      2. eraser
      3. pencil
      4. necklace
2. 2.

   Fill in the blanks:

   1. _________________ have lustre.
   2. Grouping of similar things together is called _________________.
   3. Iron is a _________________ metal.
   4. Vinegar is _________________ in water.
   5. A coin is heavier than water, so it will _________________ in water.
   6. Materials that can be compressed are called _________________.
3. 3.

   Match the following:

   Column A	Column B
   1. Glycerine	a. lustrous
   2. Gold	b. rough material
   3. Glass	c. soft material
   4. Wood	d. miscible in water
   5. Melted wax	e. transparent

    

4. 4.

   Name two hard and two soft objects.

5. 5.

   Why are gold and silver used to make jewellery?

6. 6.

   Name two natural and two human-made objects.