Question 1

What is the chemistry of cooking?

Accepted Answer

The chemistry of cooking is about how food changes when it’s mixed, cooked, or baked. It looks at how heat makes food taste and look different.

Question 2

Why does bread rise when you bake it?

Accepted Answer

Bread rises because of a tiny living thing called yeast. Yeast eats sugar, and then makes bubbles of gas that puff up the dough.

Question 3

Why do onions make you cry?

Accepted Answer

Onions have special chemicals that turn into a gas when you cut them. This gas can make your eyes sting and water, like you’re crying.

Question 4

What happens when you mix baking soda and vinegar?

Accepted Answer

When baking soda and vinegar mix, they make lots of bubbles. This happens because they create a gas called carbon dioxide.

Question 5

Why does food turn brown when you cook it?

Accepted Answer

When food turns brown, it’s because of a process called caramelization. The heat changes the sugars in the food, making it taste sweeter and look brown.

Question 6

What makes popcorn pop?

Accepted Answer

Inside each popcorn kernel is a tiny bit of water. When it gets hot, the water turns to steam and builds up pressure until the kernel pops!

Question 7

Why do apples turn brown after you cut them?

Accepted Answer

When you cut an apple, the inside reacts with the air. This reaction makes the apple turn brown, but it doesn’t make it taste bad.

Question 8

How does heat cook food?

Accepted Answer

Heat cooks food by making molecules move faster, which changes the texture and flavor. This makes it taste better and be safe to eat.

Question 9

Why does chocolate get hard when it cools down?

Accepted Answer

When chocolate cools, the fats inside it get solid. This makes the chocolate become hard again after being melted.

Question 10

What makes jelly set into a solid shape?

Accepted Answer

Jelly sets because it has gelatin, which is sticky. When it cools, gelatin traps water and turns the liquid into a gel.

Question 11

Why do we add salt to food?

Accepted Answer

Salt makes food taste better by bringing out flavors. It can also help make certain foods, like dough, just the right texture.

Question 12

How does sugar dissolve in water?

Accepted Answer

Sugar dissolves in water because the sugar particles spread out and mix with the water. This happens quickly with hot water because it helps the sugar particles move faster.

Question 13

What happens when you boil an egg?

Accepted Answer

When you boil an egg, the heat makes the inside turn from liquid to solid. This is because the proteins in the egg change shape and stick together.

Question 14

How does baking make a cake rise?

Accepted Answer

Cakes rise because ingredients like baking powder make little gas bubbles. These bubbles expand when heated, making the cake fluffy.

Question 15

Why does ice cream melt in the sun?

Accepted Answer

Ice cream melts because the heat from the sun warms it up, changing it from solid to liquid. This happens because ice cream contains water, which melts in warmth.

Question 16

Why does meat turn brown when cooked?

Accepted Answer

When heat is applied, the proteins in meat change and create a new color. This is why meat turns brown, and it also helps make it tasty.

Question 17

Why does frying make food crispy?

Accepted Answer

Frying makes food crispy because the hot oil removes water from the food’s surface. This creates a crunchy outer layer.

Question 18

Why can’t you just microwave an entire egg?

Accepted Answer

If you microwave an egg in its shell, it might explode. This is because steam builds up inside and has nowhere to go.

Question 19

How do flavors mix when cooking?

Accepted Answer

Flavors mix because heat helps the different ingredients combine their juices and oils. This makes the food taste better together.

Question 20

Why does dough get stretchy?

Accepted Answer

Dough gets stretchy because of a protein called gluten. When you knead dough, gluten stretches and gives it that elastic texture.

The Chemistry of Cooking: Understanding Ingredients and Reactions - 20 FAQs Explained Simply