Identifying Elements and Compounds

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means. It consists of only one type of atom.

Front

What is a compound?

Back

A compound is a substance formed when two or more elements chemically bond together in fixed proportions.

Front

How many elements are in the chemical formula Zn(NO3)2?

Back

3

Front

What is the second letter of an element's symbol?

Back

The second letter of an element's symbol is always a lowercase letter.

Front

How many elements are present in glucose (C6H12O6)?

Back

3

Front

What is the chemical formula for silicon dioxide?

Back

SiO2

Front

How many elements does silicon dioxide (SiO2) contain?

Back

2

Front

How many elements are present in sulfuric acid (H2SO4)?

Back

3

Front

What is the difference between an element and a compound?

Back

An element is a single type of atom, while a compound is made up of two or more different types of atoms chemically bonded together.

Front

What is a chemical formula?

Back

A chemical formula is a way of expressing information about the proportions of atoms that constitute a particular chemical compound.