Elements and Compounds Flashcard

Front

What is the smallest unit of matter that retains the chemical identity of the element?

Back

Atom

Front

What do the chemical formulas CO and CO₂ represent in terms of molecules?

Back

They both represent one molecule.

Front

What is a pure substance made of one kind of atom that cannot be broken down chemically into simpler substances?

Back

Element

Front

What is the simplest unit (particle) of a compound that can exist, formed when two or more atoms combine chemically?

Back

Molecule

Front

What is a pure substance made by chemically combining two or more elements, represented by a chemical formula?

Back

Compound

Front

What is the term for a substance that cannot be broken down into simpler substances by chemical means?

Back

Element

Front

What is formed when two or more atoms bond together?

Back

Molecule

Front

What is the difference between an atom and a molecule?

Back

An atom is a single unit of an element, while a molecule is a group of two or more atoms bonded together.

Front

What is a chemical formula?

Back

A representation of a substance using symbols for its constituent elements and numbers to indicate the ratio of atoms.

Front

What is the term for a substance made of two or more different elements that are chemically bonded?

Back

Compound