Baljinder Kaur Solutions for Chapter: Matter and Its Composition, Exercise 1: Worksheet

Differentiate between solids, liquids and gases.

Give one word for the following:

Substances that takes the shape of its container.

Give one word for the following:

Anything that occupies space and has weight.

Give one word for the following:

Material that has a uniform composition and the same properties throughout its bulk. (Heterogeneous mixture/Homogeneous mixture)

Show that the reaction of ammonia and hydrochloric acid to form ammonium chloride is in accordance with the law of conservation of mass.$\left(\mathrm{Atomic} \mathrm{mass}:\mathrm{N}=14,\mathrm{H}=1,\mathrm{Cl}=35.5\right)$

${\mathrm{NH}}_3+\mathrm{HCl}\leftrightarrow {\mathrm{NH}}_4\mathrm{Cl}$

Show that the chemical reaction in which magnesium burns with dazzling white light to form magnesium oxide is in accordance with the law of conservation of mass. $\left(\mathrm{Atomic} \mathrm{mass}: \mathrm{Mg}=24,\mathrm{O}=16\right)$

Give two examples of vapour.

Give two examples of liquefied gases.