Chocolate Chip Cookies and Food Chemistry

Which of the following best describes the dough of chocolate chip cookies before baking?

• Homogenous mixture

• Heterogenous mixture

• Chemical change

• Physical change

What type of change occurs when chocolate chip cookies are baked in the oven?

• Homogenous mixture

• Heterogenous mixture

• Chemical change

• Physical change

Which of the following is a physical change that occurs during the preparation of chocolate chip cookies?

• Melting of butter

• Browning of the cookies

• Formation of carbon dioxide gas

• Caramelization of sugar

What is the primary reason chocolate chip cookies are considered a heterogenous mixture?

• The ingredients are evenly distributed

• The chocolate chips are not uniformly distributed

• The dough is a single phase

• The cookies have a uniform texture

Which of the following is a potential lab hazard when baking chocolate chip cookies?

• Exposure to high temperatures

• Inhalation of flour dust

• Contact with raw eggs

• All of the above

When sugar dissolves in the dough, what type of mixture is formed?

• Homogenous mixture

• Heterogenous mixture

• Chemical change

• Physical change

Which of the following represents a chemical change during the baking of chocolate chip cookies?

• Mixing flour and sugar

• Melting chocolate chips

• Browning of the cookies

• Chilling the dough

What is the role of baking soda in the chemistry of chocolate chip cookies?

• It acts as a sweetener

• It provides flavor

• It acts as a leavening agent

• It adds color

Which of the following is a physical change that occurs when chocolate chips are added to the dough?

• The chocolate chips melt

• The dough rises

• The chocolate chips are mixed into the dough

• The sugar caramelizes

What safety precaution should be taken to avoid burns when removing chocolate chip cookies from the oven?

• Use a metal spatula

• Wear oven mitts

• Use a wooden spoon

• Wear safety goggles