Question

help me in my chemistry exam​

Answer 1

Answer:

2.a.3rd option

Explanation:

please thanks all my answers and mark the brainliest

Answer 2

Answer:

1. Q.

• vaccum (it is not state of mater)
• milk (it is liquid and other solid)
• helium (it is inert or nobal gas)
• coal.(it is solid fuel)

2Q

a ?????

b

characteristics of Gases

• What are the Properties of Gases? Gasses do not possess any definite volume or shape. ...
• Compressibility. Particles of gas have huge intermolecular spaces in the midst of them. ...
• Expansibility. When pressure is exerted on gas, it contracts. ...
• Diffusibility. ...
• Low Density. ...
• Exertion of Pressure.

Q3

a.

Diffusion is the net movement of anything from a region of higher concentration to a region of lower concentration. Diffusion is driven by a gradient in concentration. The concept of diffusion is widely used in many fields, including physics, chemistry, biology, sociology, economics, and finance.

b

Diffusion is the property of matter which is based on the motion of its particles. Diffusion occurs in gases, liquids and solids. Diffusion is fastest in gases and slowest in solids. The rate of diffusion increases on increasing the temperature of the diffusing substance.

c

1. pure
2. mixture
3. mixture
4. mixture
5. pure.

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