"Water is a compound and not a mixture". Justify this statement giving two reasons. Asked by Topperlearning User | 17th Jul, 2015, 07:15: AM Expert Answer: 1) Hydrogen and oxygen are chemically combined in the water molecule and are present in a fixed ratio of 1:8 by mass. 2) Properties of Hydrogen and Oxygen are different from that of the water.
Why is water a compound not a mixture?
Give two reasons supporting that water is a compound and not a mixture. It cannot be separated into its constituent elements by physical methods. The property of water is completely different from its constituent elements hydrogen and oxygen. Was this answer helpful? On the basis of the following features identify the correct option. I.
Is water a compound or element?
Water is a compound. It is made up of many elements, including hydrogen and oxygen atoms that are bonded together. Physical techniques cannot separate water into its components, hydrogen and oxygen. Chemical procedures are the sole way to split it into its parts. Water has qualities that are completely distinct from those of its components.
Is water a pure substance or a mixture?
And the stuff that 99.999% of us consider water will NOT have a pH of 7.0 or be free of chlorides. So while a chemist may be able to collect pure samples of the chemical compound water, if he can afford it, the commonly available ( as in, the stuff covering about 3/4 of the planet ) is a mixture.
What is a mixture of substances?
This strictly depends on your definition of “mixture.” It does not have to mean two or more substances that can be separated physically as would gravel and marbles, but can mean the water molecule that contains a mixture of oxygen and hydrogen chemically bonded together. This is a language problem, not one of technology or science.
Why water is a compound and not a mixture give two reasons?
Water is a compound because: Water cannot be split into its constituents, hydrogen and oxygen, by physical methods. It can only be separated into its constituents by chemical processes. The properties of water are entirely different from those of its constituents.
Why is water a compound and not a mixture give two reasons Class 9?
(i) The two elements hydrogen (H) and oxygen (O) are combined chemically to form water (H2O) which boils at a fixed temperature. ... (ii) The properties of water are altogether different from the constituting elements.17-Oct-2020
Why is water considered as a compound Give two reasons?
Water is considered to be a compound due to the following reasons : (i) Water cannot be separated into its constituents hydrogen and oxygen by physical methods. (ii) Properties of water are entirely different from its constituents hydrogen and and oxygen.16-Oct-2020
Why is a compound not a mixture?
A compound contains atoms of different elements chemically combined together in a fixed ratio. A mixture is a combination of two or more substances where there is no chemical combination or reaction. Compounds contain different elements in a fixed ratio arranged in a defined manner through chemical bonds.
What is the difference between a compound and a mixture?
And a Compound is a chemical combination of two or more substances in fixed ratio.
Why are compounds considered pure substances?
because water is having the fixed composition of Hydrogen and Oxygen gas. They are always present in the ratio of 2:1. Therefore compounds are considered as pure substance (elements & compunds). But in case of mixtures the ratio of different components may not always remain constant.
What are the elements of water?
1 the elements of water Hydrogen and Oxygen are in a definite proposition by weight 1;8 : ( 2 grams of Hydrogen combines with 16 grams of OXYGEN. 2. Formation of a compound is a chemical change which is followed by absorption of energy or evolution of energy ; formation of water electricity is required.
What is the ratio of water to oxygen?
Water meets these two criteria: the hydrogen and oxygen atoms are bound to each other, and they are always in a 2:1 ratio.
What is a mixture made of?
A mixture is made of two or more substances that are not chemically combined and which do not have a definite ratio . Saltwater is a good example of a mixture. Salt (NaCl) and water are both compounds, but they do not bond to each other, and you can make a saltwater mixture with any old ratio of salt and water.
Why are the original properties of the constituent elements not retained?
original properties because there is no chemical reaction and in a compound the properties of the constituent elements are not retained because there is a chemical reaction while forming a compound. Hydrogen and oxygen are the elements from which water is formed.
Is water a compound or element?
Water is a pure substance whose fundamental unit is water molecule. It is definitely a compound, because hydrogen and oxygen are chemically bonded in a water molecule. In mixture, more than one element or compound are mixed together, but not chemically bonded to each other.