Counting Atoms

Front

How many elements are present in the compound Mg₂As₃COHNi₂?

Back

6

Front

How many Nitrogen atoms are in the compound H₂C₃O₄N₅?

Back

5

Front

What is a subscript in a chemical formula?

Back

A subscript is the small number below the element symbol that tells the number of atoms of that element.

Front

What does a constant speed graph look like?

Back

A constant speed graph is a straight line on a distance-time graph.

Front

What does the term 'atoms' refer to in chemistry?

Back

Atoms are the basic units of matter that make up elements.

Front

What is the significance of the coefficients in a chemical formula?

Back

Coefficients indicate the number of molecules or moles of a compound.

Front

How do you determine the total number of atoms in a compound?

Back

Add the subscripts of all elements in the compound.

Front

What is the difference between an element and a compound?

Back

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

Front

What does the term 'molecular formula' mean?

Back

A molecular formula shows the number and type of atoms in a molecule.

Front

What is the role of subscripts in chemical formulas?

Back

Subscripts indicate the number of atoms of each element in a compound.