Question 1

What happens when you cook an egg?

Accepted Answer

When you cook an egg, the heat makes the clear part turn white and firm. This is because heat changes the egg proteins so they stick together.

Question 2

Why does bread rise when baked?

Accepted Answer

Bread rises because tiny creatures called yeast eat sugar and release gas bubbles. These bubbles make the dough puff up and become fluffy.

Question 3

Why does ice melt when you heat it?

Accepted Answer

Ice is just frozen water, so when you heat it, it gets warm and turns into liquid water. This is like turning a solid block into a flowing river.

Question 4

How does sugar dissolve in water?

Accepted Answer

Sugar dissolves in water because the tiny sugar bits get surrounded by water parts and spread out. It's like a sugar cube disappearing in a cup of tea.

Question 5

Why does popcorn pop?

Accepted Answer

Inside each popcorn kernel is some water, and when it's heated, the water turns into steam. The steam builds pressure until the kernel bursts and pops.

Question 6

How does cooking change the color of meat?

Accepted Answer

Cooking meat causes a reaction where heat changes the color from pink to brown. This happens because the heat changes its proteins and sugars.

Question 7

Why do apples turn brown after cutting?

Accepted Answer

When you cut an apple, its insides meet air, and a chemical reaction happens. The apple tries to protect itself but ends up turning brown.

Question 8

Why do chefs use salt while cooking?

Accepted Answer

Chefs use salt because it makes food taste better by bringing out flavors. It's like adding a magic sprinkle that wakes up the taste of the dish.

Question 9

Why does pasta stick together if not stirred?

Accepted Answer

If you don't stir your pasta, the sticky outside parts can glue together. Stirring keeps them apart so they stay in separate pieces.

Question 10

How does lemon juice cook fish in ceviche?

Accepted Answer

Lemon juice has something called acid that changes the way fish proteins act, making them look and taste cooked. It's like magic cooking without stove heat.

Question 11

Why does frying make food crispy?

Accepted Answer

Frying makes food crispy because the oil's hot temperature takes out water and hardens the outside. This gives you that yummy crunch!

Question 12

What makes soda fizzy?

Accepted Answer

Soda is fizzy because it has gas called carbon dioxide in it. When you open the bottle, the gas escapes and makes bubbles.

Question 13

Why do cookies spread out when baking?

Accepted Answer

Cookies spread out because the heat melts the butter and sugar, turning it into a gooey liquid. This liquid spreads and makes the cookie bigger and flatter.

Question 14

Why do onions make you cry when cut?

Accepted Answer

Onions make you cry because when you cut them, they release a gas that mixes with water in your eyes. This gas creates a reaction that makes your eyes sting and water.

Question 15

What makes cake batter rise?

Accepted Answer

Cake batter rises because baking powder or soda releases gas bubbles when heated. These bubbles lift the cake, making it light and airy.

Question 16

Why do we need to marinate meat?

Accepted Answer

Marinating meat involves soaking it in a tasty liquid to add more flavor. It helps the meat become tender and delicious by breaking down some parts.

Question 17

How does butter turn into ghee?

Accepted Answer

To make ghee, you heat butter until the watery parts go away, leaving behind pure fat. This fat doesn’t burn easily and has a special nutty taste.

Question 18

What makes muffins rise?

Accepted Answer

Muffins rise because ingredients like baking powder puff up in the oven's heat. When they puff, they give muffins their fluffy texture.

Question 19

Why does chocolate melt in your mouth?

Accepted Answer

Chocolate melts in your mouth because it has fats that melt at body temperature. This makes it turn from solid to smooth and creamy.

Question 20

How does grilling make food taste smoky?

Accepted Answer

Grilling gives food a smoky flavor because the wood or charcoal releases smoke when burning. This smoke clings to the food, giving it a special taste.

The chemistry of cooking: reactions, ingredients, and techniques - 20 FAQs Explained Simply