Last seen: Nov 14, 2021
Correct answer is (d) Bromine and mercury
Correct answer is (c) Gallium
Correct answer is (b) A metal
Correct answer is (b) Hydrogen
Correct answer is (c) Alcohol
Correct answer is (b) Germanium
Correct answer is (c) (i) and (iii)
Correct answer is (c) Silica
(a) Three general classes of matter are elements, compounds and mixtures. Element – Aluminium Compound – Sodium chloride Mixtures – Sugar sol...
(a) Mixtures are the substance that contains two or more different kinds of particles or substances mixed together by physical methods. Example: Air...
(a) (i) Metals are elements that are malleable, ductile and conduct electricity. Example: Aluminium and zinc (ii) Non-metals are elements that a...
(a) (i) Element: A substance that cannot split into two or more simpler substance by chemical methods. Examples: carbon and oxygen are non-metals, ...
(a) Homogenous mixture: 1. A substance that is uniform in composition. 2. It has a single phase. 3. Sugar solution, salt solution are examples. ...
Chlorine gas, Aluminium foil, Iodine vapour, Graphite, Sulphur powder, Diamond are not compounds
(a) Sodium (b) Mercury (c) Mercury (d) Sodium (e) Gold
(a) Iodine is a lustrous non-metal. (b) Oxygen is a non-metal required for combustion. (c) Graphite is an allotrope of carbon and a good conduct...
We can distinguish a solution from compound by the process of distillation. The constituents can be separated by distillation but for a compound it is...
Both can be separated into their constituents by physical methods and the difference is that the separation is not visible in the mixture of sugar and...
Solution of salt in water is considered as mixture because salt solution is made up of salt and water 1. The constituents of salt solution might be...
Mixtures 1. They are impure substances. 2. It can be separated into constituents by the physical processes. 3. Shows the properties as that of ...