Science Flashcard

Front

What is a chemical formula?

Back

A symbolic expression representing the elements in a substance with subscripts indicating the relative numbers of atoms.

Front

What is an element?

Back

A chemical substance made of only one type of atom.

Front

Where are nonmetals typically located on the periodic table?

Back

Right side.

Front

What is a ductile material?

Back

A material that can be stretched into a wire.

Front

What is the definition of density?

Back

The mass per unit volume of a given material.

Front

What is a compound?

Back

A substance formed when two or more elements chemically bond together.

Front

What is the atomic number?

Back

The number of protons in the nucleus of an atom, which determines the element's identity.

Front

What is a mixture?

Back

A combination of two or more substances that are not chemically bonded.

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed.

Front

What is a physical change?

Back

A change that affects one or more physical properties of a substance without altering its chemical composition.