Counting Atoms

Front

How many different elements are present in H₂COCH₂?

Back

3 (Hydrogen, Carbon, Oxygen)

Front

A substance made up of atoms of two or more different elements joined by chemical bonds is called a?

Back

Compound

Front

How many total POTASSIUM atoms are in the formula K₈?

Back

8

Front

In the formula C₃H₅(NO₃)₃, how many atoms of each element are there?

Back

C = 3, H = 5, N = 3, O = 9

Front

How many atoms of hydrogen are in C₆H₁₂O₆?

Back

12

Front

What is the definition of an atom?

Back

The smallest unit of a chemical element, consisting of a nucleus surrounded by electrons.

Front

What is a molecule?

Back

A group of two or more atoms bonded together.

Front

What is the difference between an element and a compound?

Back

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

Front

What does the subscript in a chemical formula indicate?

Back

The number of atoms of the element in the molecule.

Front

What is the chemical formula for water?

Back

H₂O (2 Hydrogen atoms and 1 Oxygen atom)