Fill in the blanks.
1. Stars including Sun are covered in _____
2. Tiny particles present in all matter are called as _____
3. A _____ substance is made up of only one kind of particles.
4. Purity of gold is expressed in terms of _____
5. _____ is used to separate gravel from sand at a construction site.
6. _____ process is done after sedimentation.
7. RO is a process for removing impurities from _____ to make it potable.
8. Turmeric powder is adulterated with a _____ chemical.
9. In most houses people use commercial water filter to remove impurities and also kill the harmful germ in water using _____
10. The principle used in washing machines to squeeze out dirt from cloth is called _____
11. _____ is not affected by gravity.
12. An example for a substance to be obtained in highly pure form is _____
