Entrance/Exit Ticket Assignments This is a collection of the Entrance/Exit Ticket assignments that were collected for points Entrance Ticket 1 • What elements make up a carbohydrate? • Explain how the bonding properties of carbon atoms result in the large variety of carbon-based molecules in living things? Entrance Ticket: What is this? What does it do (purpose)? This is homework if not done in class. It is for your entrance ticket tomorrow. It is worth five points and you will turn it in. Use your book Entrance/Exit Ticket • What causes hydrogen bonds to form between polar molecules? • In what kind of molecule are the instructions for building proteins stored? Entrance/Exit Ticket • What is a chemical reaction (give an example with the definition)? • What is an endothermic reaction? What is an exothermic reaction? How do they differ?