What is a substance composed of two or more atoms?

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?

What is formed when two or more different kinds of atoms form?

The things formed are called molecules and molecules can form between two or more of the same atoms as well as different kinds of atoms. When a molecule is formed from two or more different atoms that molecule is called a compound molecule or compound for short.

What happens when two or more elements are combined?

A combination of two or more elements chemically combined is a compound . Compounds can be molecular or ionic. In a molecular compound, the electrons of the elements making it up are shared, forming covalent bonds. The smallest particle of a molecular compound that has the properties of that compound is a molecule.

How is a molecule different from a compound?

A molecule is a group of two or more atoms held together by chemical bonds. A compound is a substance which is formed by two or more different types of elements which are united chemically in a fixed proportion. All molecules are not compounds. All compounds are molecules.

What is formed when two or more elements combine chemically?

What is formed when two or more elements combine chemically? When two or more elements combine to form a new substance, it is called a compound. A compound is made when atoms of two or more elements bond in a chemical reaction. Two hydrogen atoms and one oxygen atom bond to form a molecule of water (H2O).

How are pure substances different from mixtures and compounds?

Pure substances are further broken down into elements and compounds. Mixtures are physically combined structures that can be separated into their original components. A chemical substance is composed of one type of atom or molecule. A mixture is composed of different types of atoms or molecules that are not chemically bonded.

Which is the best description of a compound?

A pure substance containing two or more kinds of elements. The atoms are chemically combined in some way. Often times (but not always) they come together to form groups of atoms called molecules. A compound is always homogeneous (uniform).

How are two elements combined to form a chemical compound?

Two or more elements combined into one substance through a chemical reaction, such as water, form a chemical compound. All compounds are substances, but not all substances are compounds. A chemical compound can be either atoms bonded together in molecules or crystals in which atoms, molecules or ions form a crystalline lattice.

How are the different types of compounds defined?

Compounds can be defined as substances consisting of 2 or more different types of elements in a fixed ratio of its atoms. When the elements combine, some individual property of the elements is lost and the newly formed compound has new properties. Chemical Formula: Compounds are represented by their chemical formula.

What do you call elements that are chemically combined in a definite ratio?

Two or more different elements that are chemically combined in a definite ratio is a compound. Based on the nature of the bonds, it can be called an ionic compound (i.e. atoms bonded together by ionic bonds) or an molecular compound (i.e. atoms bonded together by covalent bonds).

When do two elements combine to form a compound?

When two or more elements chemically combine in a fixed ratio by mass, the obtained product is known as a compound. Compounds can be defined as substances consisting of 2 or more different types of elements in a fixed ratio of its atoms.

How are the components of a mixture separated?

Mixtures are combinations of two or more elements and/or compounds. The components in a mixture can be separated by physical separation methods, such as sieving, filtration, evaporation,…

Is it possible to combine two elements to form two different compounds?

Match each of the following experiments/observations with the information it contributed to the nuclear model of the atom. It is possible for two elements to combine in different ways to form two or more different compounds, such as CO and CO2.