Counting Atoms

Front

What is the chemical formula for glucose?

Back

C6H12O6

Front

How many atoms of hydrogen are in C6H12O6?

Back

12

Front

What does a subscript in a chemical formula indicate?

Back

The number of atoms of the element in the molecule.

Front

If an element symbol has no subscript next to it, how many atoms of that element are present?

Back

1

Front

How many Sodium (Na) atoms are in 6NaCl?

Back

6

Front

What is the total number of atoms in H2SO4?

Back

7

Front

Which of the following is NOT a sign of a chemical reaction? A phase change, Formation of a precipitate, A color change, A temperature change?

Back

A phase change

Front

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

Back

It indicates the number of molecules or formula units.

Front

What is a chemical reaction?

Back

A process that leads to the transformation of one set of chemical substances to another.

Front

What is a precipitate?

Back

A solid that forms and settles out of a liquid mixture.