1. What is meant by a pure substance?
2. List the point of differences between homogeneous & heterogeneous mixture?
3. Classify the following into elements, compounds & mixture:
a) Sodium b) Soil
c) Sugar Solution d) Silver
e) Calcium carbonate f) Silicon
h) Air
i) Soap j) Methane
k) Carbon dioxide
4. Why the cell is called the structural & functional unit of life?
machetween nrokaryotic & eukaryotic cell?
s
g) Coal
i'
Answers
Answer:
1) a substance that has a fixed chemical composition throught is called pure substance.
2) homogeneous :- ●the mixture which is mix in uniformly is called homogeneous mixture.
e.g :- alloys, salt in water
● we do not separate them.
heterogeneous :- ● the mixture which is not mix in uniformly is called heterogeneous mixture.
e.g :- muddy water
● we can separate it.
4) because over all our body made with cells, every organs made by cells and cells are divide and did the many functions so cells are called structural and functional unit.
Explanation:
may be they are all right answer .
follow me
I hope it is helpful to you •••••♡♡♡♡••••
▪▪▪▪▪▪▪▪-------▪▪▪▪▪
Answer:
1) a substance that has a fixed chemical composition throught is called pure substance.
2) homogeneous :- ●the mixture which is mix in uniformly is called homogeneous mixture.
e.g :- alloys, salt in water
● we do not separate them.
heterogeneous :- ● the mixture which is not mix in uniformly is called heterogeneous mixture.
e.g :- muddy water
● we can separate it.
4) because over all our body made with cells, every organs made by cells and cells are divide and did the many functions so cells are called structural and functional unit.
Explanation:
may be they are all right answer .
follow me
I hope it is helpful to you •••••♡♡♡♡••••
▪▪▪▪▪▪▪▪-------▪▪▪▪▪