Counting Atoms and Elements

Front

What is the chemical formula for three hydrogen (H), one sulfur (S), and four oxygen (O)?

Back

H₃SO₄

Front

How many atoms of Carbon are in the formula C₆H₁₂O₆?

Back

6

Front

What is the formula for ethane, given that black = Carbon (C) and white = Hydrogen (H)?

Back

C₂H₆

Front

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

Back

6

Front

Is CaSO₄ an element or a compound?

Back

Compound

Front

Define 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 chemically bonded.

Front

What does the subscript in a chemical formula represent?

Back

The number of atoms of the element in the molecule.

Front

What is the chemical formula for water?

Back

H₂O