Physical Nature of Matter Questions in English

(A) Matter is defined as anything that has mass and occupies space.
$1$. Chair: Has mass and occupies space (Matter).
$2$. Air: Has mass and occupies space (Matter).
$3$. Love: An emotion,not matter.
$4$. Smell: The sensation of smell is not matter,but the particles of perfume causing the smell are matter.
$5$. Hate: An emotion,not matter.
$6$. Almonds: Have mass and occupy space (Matter).
$7$. Thought: $A$ mental process,not matter.
$8$. Cold: $A$ sensation,not matter.
$9$. Lemon water: Has mass and occupies space (Matter).
$10$. Smell of perfume: The particles of perfume in the air have mass and occupy space (Matter).
Therefore,the items that are matter are: Chair,air,almonds,lemon water,and smell of perfume.

(B) No,one cannot consider it as matter.
By definition,matter is anything that occupies space and has mass.
Since the substance lacks mass,it does not fulfill the fundamental criteria to be classified as matter.

$(a)$ $10^{3}$ is kilo $(k)$
$(b)$ $10^{-1}$ is deci $(d)$
$(c)$ $10^{-2}$ is centi $(c)$
$(d)$ $10^{-6}$ is micro $(\mu)$
$(e)$ $10^{-9}$ is nano $(n)$
$(f)$ $10^{-12}$ is pico $(p)$

(A) The property of gas used in supplying oxygen cylinders to hospitals is high compressibility.
Because gases have high compressibility,a large volume of gas can be compressed into a small cylinder,making it easy to transport and store for medical use.

(N/A) $(i)$ The rate of diffusion increases with an increase in temperature. This occurs because the kinetic energy of the particles increases as temperature rises.
$(ii)$ The rate of diffusion is higher for a liquid that has a lower density,as particles can move more freely through a less dense medium.

(A) The melting point of a solid is a measure of the strength of the forces of attraction between the constituent particles (atoms,ions,or molecules) of the solid.
$A$ higher melting point indicates that the particles are held together by stronger forces of attraction,requiring more energy (heat) to overcome these forces and transition the substance from a solid state to a liquid state.

(TRUE) The statement is True.
Diffusion is the process of movement of particles from a region of higher concentration to a region of lower concentration.
In liquids,the rate of diffusion is influenced by several factors:
$1$. Viscosity: Higher viscosity (thickness) of a liquid creates more resistance to the movement of particles,thereby slowing down the rate of diffusion.
$2$. Chemical Nature: The intermolecular forces and the size of the molecules of the diffusing substances affect how easily they can move through the medium.
Therefore,both viscosity and chemical nature are critical determinants of the diffusion rate in liquids.

(TRUE) The statement is True.
Physical properties are those characteristics of matter that can be observed or measured without changing the chemical identity of the substance. Examples include color,hardness,density,melting point,boiling point,and physical state (solid,liquid,or gas).

(D) The symbol $\mu$ represents the prefix 'micro'.
By definition,$1 \text{ micro} = 10^{-6}$.
Therefore,$1 \mu m = 10^{-6} \text{ m}$.
This unit is commonly used in biology to measure the size of cells and organelles.