This activity is for a high school chemistry class. It has 40 compound name cards with the answers on the back. The teacher will print these (may laminate them). The teacher will then pick a card randomly. She may write the compound name on the board or use a document camera for the students. The students will then write the correct formula and solve for the molar mass of that compound. (A worksheet is provided so that that the student can show their work). Students will then see if the answer is on their "BINGO" card. They can highlight or shade in the square on their card. (32 different "BINGO" cards are provided). This process can continue until someone wins the game. Winner can be one complete row (horizontal or vertical), a row diagonally or could be the student with the most correct answers.