Water is a compound
because it is made up of water molecules
. There is no such thing as water atoms. Water molecules are made of hydrogen and oxygen atoms, in the definite proportion
Why is water a compound?
Answer. Water is a compound. It contains more than one element:
hydrogen and oxygen atoms are joined together
; as illustrated in the video clip Elements and Compounds, above. … Water is not simply a mixture of hydrogen and oxygen; it contains hydrogen and oxygen atoms linked together in an ordered way.
Is water a compound class 9?
Water is
a compound
. It is made up of many elements, including hydrogen and oxygen atoms that are bonded together.
Why is water a compound 2 reasons?
Two reasons to prove that water is a compound and not an element are:
Water comprises of 2 parts of hydrogen and one part of oxygen and they combine chemically
. Thus water is a compound which is made up of two elements and its properties are completely different from its constituents.
How can you prove that water is a compound class 9?
- Water is formed by the chemical bond between 2 hydrogen and one oxygen atom.
- A bond between atoms of water can be broken by chemical reaction. …
- Atoms of water cannot be separated by the physical process.
- Hence, water is a compound because it can only be separated into hydrogen and oxygen atom by chemical reaction.
Which compound is water?
Water as a Compound and Molecule
A compound forms whenever two or more atoms form chemical bonds with each other. The chemical formula for water is
H
2
O
, which means each molecule of water consists of one oxygen atom chemically bonded to two hydrogen atoms. Thus, water is a compound.
How can we say water is a compound?
Water is a compound because
it is made up of water molecules
. There is no such thing as water atoms. Water molecules are made of hydrogen and oxygen atoms, in the definite proportion of two hydrogens for one oxygen.
Is dry ice a mixture?
Dry ice is a compound consisting of one carbon dioxide molecule chemically bonded to two molecules of oxygen and not an element or
a mixture
.
Is milk mixture or compound?
Thus, milk is a
mixture
of fats, proteins, sugar and water which are mixed irrationally. Thus, milk is not a pure substance or a compound that is made up of one type of atom or molecule. But milk is a mixture of fats, proteins, sugar and water which are mixed irrationally. Thus, milk is a mixture.
Is milk is a mixture?
Main compounds of milk are lactose and casein. And it is also called a
colloidal mixture
(i.e. in which one substance of microscopically dispersed insoluble or soluble particles is suspended throughout another substance). Therefore milk is regarded as a mixture not as a pure substance.
Is water’s composition fixed?
A chemical compound is a chemical substance consisting of two or more different chemically bonded chemical elements, with a
fixed ratio
determining the composition. … For example, water (H2O) is a compound consisting of two hydrogen atoms bonded to an oxygen atom.
Why do we say air is a mixture?
Air is a mixture and not a compound because:
Air does not have a formula like a mixture
, while compounds have a fixed formula. When air is formed by gases, there is no energy change. … Components of air can be physically separated.
Is all mixtures are homogeneous?
Explanation: A mixture is a combination of two or more substances (called components) in which each substance retains its chemical identity. … Since
not all mixtures are homogeneous
, not all mixtures are solution.
Why is oxygen not a mixture?
Molecules have molecular bonds. … Oxygen in the atmosphere is a molecule because it contains molecular bonds. It is not a compound
because it is made from atoms of only one element – oxygen
. This type of molecule is called a diatomic molecule, a molecule made from two atoms of the same type.
What is the total number of compounds?
Globally,
more than 350,000 chemical compounds
(including mixtures of chemicals) have been registered for production and use. A compound can be converted to a different chemical substance by interaction with a second substance via a chemical reaction.
Is Salt a mixture?
Mixtures. Ordinary table salt is called sodium chloride. It is considered a
pure substance
because it has a uniform and definite composition. … A mixture is a physical blend of two or more components, each of which retains its own identity and properties.
