In liquid, the molecules are tightly packed.
Important Questions on Matter and Materials
Fill in the blank with an appropriate word:
The smallest unit of a substance is a _____(molecule/complex).
Change of water into vapour is a _____ change.
Fill in the blank with the correct option given in the bracket.
The fine-grained rock formed when lava cools quickly is called _____. (sedimentary rocks/ metamorphic rocks/ igneous rocks)
Fill in the blank with an appropriate word:
Molecules can be broken down into smaller units called _____(atoms/energy).
Choose the correct answer from the box and fill in the blank.
| gases | solids | liquids |
Things that do not have a fixed volume and can flow are called _____.
Fill in the blank with an appropriate word:
Water changes into ice by_____ (melting/freezing).
Choose the correct answer from the box and fill in the blank.
| gases | solids | liquids |
_____ have a definite shape, mass and volume.
Unscramble MLECULEO to fill in the blank:
The smallest unit of a substance is _____.
