Counting Atoms

Front

What is the chemical formula for 1 atom of nickel and 2 atoms of fluorine?

Back

NiF₂

Front

What is a molecule of a compound?

Back

A molecule formed from two or more different elements, e.g., H₂O.

Front

How many elements are in the chemical formula HCl?

Back

2

Front

What do coefficients in chemical formulas do?

Back

They multiply EVERYTHING in the formula.

Front

What is the chemical symbol for carbon?

Back

C

Front

What does a subscript in a chemical formula indicate?

Back

The number of atoms of the element in the molecule.

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.

Front

What is the chemical formula for water?

Back

H₂O

Front

How many atoms are in the molecule C₆H₁₂O₆?

Back

24 atoms (6 C + 12 H + 6 O).

Front

What does the formula NaCl represent?

Back

Sodium chloride, a compound made of sodium and chlorine.