What is made up of two or more elements in specific proportions?

What is made up of two or more elements in specific proportions?

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 are made up of two or more elements?

A compound is a chemical substance made up of two or more elements.

When two or more elements are combined in fixed proportion?

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

Are substances composed of two or more elements combined chemically in fixed proportion by?

chemical compound
A chemical compound is a substance composed of two or more different elements chemically bonded together in a fixed proportion by mass. When a compound is formed from its components, a chemical change takes place through chemical reactions.

When two or more elements in a fixed proportion chemically combined?

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

What is made up of elements in fixed proportions?

What is made up of two or more substances that can be separated by physical means?

Mixtures
Mixtures – two or more substances that are not chemically combined with each other and can be separated by physical means. The substances in a mixture retain their individual properties. Solutions – a special kind of mixture where one substance dissolves in another.

Are substances composed of two or more forms of matter?

A material composed of two or more substances is a mixture. A substance that can be broken down into chemically simpler components (because it has more than one element) is a compound. For example, water is a compound composed of the elements hydrogen and oxygen.

Which is true of the law of definite proportions?

The law of definite proportions is a law of science that says that a chemical compound is always made up of the exact same proportion of elements by mass. So, if a compound is made by combining 1/4 from one chemical and the remaining 3/4 from another chemical, these proportions will always hold true, regardless of the amount of chemicals added.

How are two elements combined to form a compound?

     Elements can be chemically combined into compounds, therefore, a compoundconsists of two or more elements combined, in definite proportions, by chemical means.   Compounds may be formed by combining atoms of their constituent elements

What is a substance composed of two or more atoms?

A compound is a pure substance made of two or more elements chemically combined in a set ratio. A compound may be represented by a chemical formula, which shows the elements in the compound and the ratio of atoms, CO2. What are the similarities and differences between a compound and a molecule?

Which is an example of the law of multiple proportions?

These compounds obey the law of multiple proportions instead. One such example is wustite, an oxide of iron with the chemical formula FeO. The ratio of iron and oxygen atoms can range from 0.83:1 to 0.95:1. This is caused by the crystallographic vacancies in the samples caused by a disorderly arrangement of atoms.