Question 1

What is the chemistry of cooking?

Accepted Answer

The chemistry of cooking is about what happens to food when we cook it. It's all about the tiny changes in the ingredients that make our food taste good, smell delicious, and look yummy.

Question 2

Why does bread rise when you bake it?

Accepted Answer

Bread rises because of something called yeast. Yeast makes tiny bubbles of gas that get trapped in the dough, making it puff up like a balloon.

Question 3

Why do apples turn brown after you cut them?

Accepted Answer

Apples turn brown because when you cut them, a part of them called an enzyme mixes with the air. This reaction makes the apple change color.

Question 4

Why do onions make you cry when you cut them?

Accepted Answer

Onions make us cry because when we cut them, they release a gas. This gas mixes with our eyes and creates a tear-inducing reaction.

Question 5

What makes popcorn pop?

Accepted Answer

Popcorn pops because each kernel has a little bit of water inside. When it's heated, the water turns to steam, and the pressure makes the kernel explode and pop!

Question 6

Why do eggs turn solid when you cook them?

Accepted Answer

Eggs turn solid because heat makes the proteins in the eggs tangle up into a tight network. This thickens the egg and makes it go from runny to solid.

Question 7

Why does chocolate melt in your mouth?

Accepted Answer

Chocolate melts in your mouth because it has something called fats that melt at body temperature. This makes it feel smooth and creamy when you eat it.

Question 8

How does sugar make things sweet?

Accepted Answer

Sugar makes things sweet because it triggers special taste buds on your tongue. These taste buds send signals to your brain telling you that what you're eating is sweet.

Question 9

What is caramelization?

Accepted Answer

Caramelization is what happens when sugar is heated and turns brown. This makes foods like caramel sauce and roasted vegetables taste sweeter and richer.

Question 10

Why do cakes rise in the oven?

Accepted Answer

Cakes rise in the oven because of the bubbles of gas created by baking powder or baking soda. The heat makes the bubbles bigger, which helps the cake rise and become fluffy.

Question 11

What makes meat turn brown when you cook it?

Accepted Answer

Meat turns brown when you cook it because of a reaction called the Maillard reaction. It's a special reaction between proteins and sugars that makes the meat taste great.

Question 12

Why do vegetables get soft when you cook them?

Accepted Answer

Vegetables get soft when you cook them because heat breaks down their tough cell walls. This makes them softer and easier to eat.

Question 13

What causes bread to have holes inside?

Accepted Answer

The holes in bread are caused by gas bubbles from yeast. As the bread bakes, these bubbles get trapped, leaving all those air pockets.

Question 14

Why do we need to add salt to recipes?

Accepted Answer

We add salt to recipes because it makes flavors pop. Salt helps bring out the tastes of the ingredients, making your food taste more delicious.

Question 15

What is fermentation?

Accepted Answer

Fermentation is a process where tiny organisms like yeast or bacteria eat sugar and turn it into gas or alcohol. This process is used to make foods like bread, yogurt, and pickles.

Question 16

How do microwaves heat food?

Accepted Answer

Microwaves heat food by using special waves to make water molecules in the food wiggle. This wiggling creates heat that warms up the food quickly.

Question 17

What makes milk go sour?

Accepted Answer

Milk goes sour because bacteria start to eat the sugar in the milk and make it into acid. This process makes the milk taste bad and thicker.

Question 18

Why does cheese melt when heated?

Accepted Answer

Cheese melts when heated because the heat makes the fats in the cheese soften and the proteins loosen. This makes the cheese stretch and become gooey.

Question 19

What happens when you mix oil and water?

Accepted Answer

When you mix oil and water, they don't stay mixed because oil and water don't like each other. Oil floats on top of the water because it's lighter.

Question 20

Why is baking soda used in baking?

Accepted Answer

Baking soda is used in baking to help cakes and cookies puff up. It reacts with acids in the mix to make bubbles that help the batter rise.

The Chemistry of Cooking: Understanding Reactions in Everyday Recipes - 20 FAQs Explained Simply