Answer:
True
Explanation:
Answer: true
Explanatio:
Based on this observation, how should the unknown substance be classified?
impure substance
solution
mixture
O pure substance
Previous Activity
1:06 PM
10/20/2019
ch
Bi
Answer:
A solution
Explanation:
Mainly because a solution is a mixture of chemically bonded elements.
25 points for this question
B.two gases
C.a solid and a liquid
D.a liquid and a gas
The correct answer is b. two gases
The explanation:
-Mixtures can be either homogeneous or heterogeneous. A homogeneous mixture is a type of mixture in which the composition is uniform and every part of the solution has the same properties.\
- Examples of homogeneous mixtures include alloys and alcohol in water. A heterogeneous mixture is a type of mixture in which the components can be seen.
-One example of a mixture is air. Air is a homogeneous mixture of the gaseous substances nitrogen, oxygen, and smaller amounts of other substances.
Answer: B.two gases
Explanation: Homogeneous mixtures are mixtures in which dispersed phase is uniformly distributed throughout the dispersion medium and there is no physical boundary between the dispersed phase and dispersion medium.
Heterogeneous mixtures are mixtures in which dispersed phase is not uniformly distributed throughout the dispersion medium and there is a distinct physical boundary between the dispersed phase and dispersion medium.
a) Two liquids may or may not be completely miscible thus may form a homogeneous (milk and water) or a heterogeneous mixture (oil and water).
b) Two gases always form a homogeneous mixture as there is large vacant spaces present between the molecules.
c) A solid and a liquid may or may not be completely miscible thus may form a homogeneous (salt and water) or a heterogeneous mixture ( sand and water).
d) A liquid and a gas may or may not be completely miscible thus may form a homogeneous (river water) or a heterogeneous mixture (perfume spray).