Can a pure substance be made of more than one atom?

Can a pure substance be made of more than one atom?

A pure substance is something that occurs in nature. An element is made up of one type of atom only and cannot be split further. A compound has the combined properties of the elements from which it is made. A molecule always contains different kinds of atoms.

Which contains two or more atoms?

A molecule consists of two or more atoms of the same element, or different elements, that are chemically bound together. Note that the two nitrogen atoms which comprise a nitrogen molecule move as a unit.

What does it mean if the sample is made of only one substance or more than one substance?

A mixture is a material system made up of two or more different substances, which are mixed but not combined chemically. A mixture refers to the physical combination of two or more substances in which the identities of the individual substances are retained.

What is a substance made up of atoms of two or more different elements joined by chemical bonds?

Compounds are made up of two or more elements combined in definite quantities and in definite proportions by chemical bonds. Substances are pure forms of matter that cannot be separated or purified further by physical means; include compounds and elements.

What made up an atom?

Our current model of the atom can be broken down into three constituents parts – protons, neutron, and electrons. Each of these parts has an associated charge, with protons carrying a positive charge, electrons having a negative charge, and neutrons possessing no net charge.

Is a pure substance containing two or more elements?

A compound is a pure substance containing two or more elements that have been chemically combined in a fixed proportion. The elements carbon and hydrogen combine to form many different compounds.

How many elements are in a pure substance?

one element
The meaning of pure However, the juice is not pure in the chemical sense because it contains different substances mixed together. In chemistry: a pure substance consists only of one element or one compound. a mixture consists of two or more different substances, not chemically joined together.

What is a pure substance made of more than one element?

Both elements and compounds are called pure substances. An element has only one type of atoms (e.g. hydrogen, oxygen, carbon, sodium etc.) whereas a compound is composed of atoms of two or more elements in a fixed ratio. It is called a compound. A very common example of a compound is water, whose formula is H2O.

When does a compound become a pure substance?

Compounds, on the other hand, are also pure substances when two or more elements are combined chemically in a fixed ratio. However, these substances can be broken down into separate elements by chemical methods.

Is the Earth a pure substance or mixture?

Pure Substance Everything that exists in the earth is a form of a matter which is further defined as any substance that occupies space and has mass. The matter is further divided into various forms such as solid, liquid and gas. Apart from these, it is also classified as pure substances and mixtures.

What makes up the matter of the Earth?

Everything that exists in the earth is a form of a matter which is further defined as any substance that occupies space and has mass. The matter is further divided into various forms such as solid, liquid and gas.