Table of Contents
What is the statement about compounds?
A compound contains at least two different kinds of atoms. Another way to say this is that a compound is a substance made up at least two different elements. Oxygen, O2, is an element because it has two of the same kinds of atom.
How can you describe the compounds?
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.
Which statements describes a characteristics of all compounds?
Characteristics of a compound
- In a compound constituents are present in definite proportion by mass.
- The properties of a compound are different from the properties of its constituents.
- The constituents of a compound cannot be separated by simple physical processes.
Which describes a compound example?
Often, a compound looks and behaves nothing like any of the elements that comprise it. Consider, for example, hydrogen (H) and oxygen (O). Certain elements readily combine with other elements to form compounds. Examples are oxygen, chlorine, and fluorine.
Are all molecules compounds explain?
All compounds are molecules, but not all molecules are compounds. That is because a molecule can be made up of two atoms of the same kind, as when two oxygen atoms bind together to make an oxygen molecule. However, all compounds are made up of two or more different types of atoms.
How is a compound statement written?
A compound statement is simply a group of statements surrounded by curly braces. It can be used anywhere that a simple statement can be used to make a group of statements into a single entity. In the example above, the three assignment statements form a compound statement because they are enclosed in the curly braces.
What is the simple definition of compound?
1 : composed of or resulting from union of separate elements, ingredients, or parts: such as. a : composed of united similar elements especially of a kind usually independent a compound plant ovary.
What is a compound easy definition?
compound. [ kŏm′pound′ ] A substance consisting of atoms or ions of two or more different elements in definite proportions joined by chemical bonds into a molecule. The elements cannot be separated by physical means. Water, for example, is a compound having two hydrogen atoms and one oxygen atom per molecule.
What are the 4 defining characteristics of a compound?
Components in a compound are present in a definite proportion.
Which statement best describes how a compound is different from an element?
A compound is a substance formed when two or more elements are chemically joined. Water, salt, and sugar are examples of compounds. When the elements are joined, the atoms lose their individual properties and have different properties from theelements they are composed of.
Are all compounds pure substances?
In a scientific context, “pure” denotes a single type of material. Ostensibly, compounds contain more than one type of material. Yet both compounds and elements are considered pure substances.
Are all compounds molecules Why or why not quizlet?
All compounds are molecules but not all molecules are compounds. Hydrogen gas (H2) is a molecule, but not a compound because it is made of only one element. Water (H2O) can be called a molecule or a compound because it is made of hydrogen (H) and oxygen (O) atoms. Physical changes cause new molecules to form.