Question 1

What is chemistry?

Accepted Answer

Chemistry is the science that studies everything that things are made of. It's all about tiny particles called atoms and molecules, which are like the building blocks of everything, including your favorite toys and snacks!

Question 2

Why does baking soda fizz when mixed with vinegar?

Accepted Answer

Baking soda fizzes with vinegar because they react to make bubbles of gas. It’s like a tiny explosion of fizz, creating carbon dioxide gas!

Question 3

How does soap clean dirt?

Accepted Answer

Soap helps dirt and oil to mix with water, so you can wash them away. It's like a little helper that grabs the yucky stuff and lets water rinse it off!

Question 4

Why does sugar dissolve in water?

Accepted Answer

Sugar dissolves in water because the tiny sugar particles spread out between the water particles. It’s like sugar disappearing but still being there!

Question 5

Why does bread rise when baked?

Accepted Answer

Bread rises because yeast, a tiny living thing, makes bubbles of gas. These bubbles get trapped in the dough and make it fluffy like a sponge!

Question 6

What makes fruit juice sweet?

Accepted Answer

Fruit juice is sweet because it has a lot of natural sugar. The sugar comes from the fruit itself, like apples or oranges, which is very sweet!

Question 7

Why does milk turn sour?

Accepted Answer

Milk turns sour because tiny creatures called bacteria eat the sugar in milk and turn it into acids. These acids make milk taste sour.

Question 8

Why do onions make you cry?

Accepted Answer

Onions make you cry because they give off a gas when you cut them. This gas mixes with the tears in your eyes and makes them sting!

Question 9

Why does chocolate melt in your hand?

Accepted Answer

Chocolate melts in your hand because it's made of fat that melts at a low temperature, like your body heat. So, when you hold it, it turns into gooey chocolate!

Question 10

Why do ice cubes float in water?

Accepted Answer

Ice cubes float because they are less dense than water. This means the water underneath pushes them up, so they bob on top!

Question 11

What makes lemons taste sour?

Accepted Answer

Lemons taste sour because they have a lot of acid called citric acid. This acid gives lemons their sharp, tangy taste!

Question 12

Why does bread go stale?

Accepted Answer

Bread goes stale because it loses moisture and gets hard. It’s like when something that was once soft and squishy becomes firm!

Question 13

Why does metal rust?

Accepted Answer

Metal rusts when it gets wet and mixes with oxygen in the air. It's like when metal gets a scratchy, brown coat called rust.

Question 14

How does popcorn pop?

Accepted Answer

Popcorn pops because there's a tiny bit of water inside each kernel. When heated, the water turns into steam, which makes it explode and turn inside out!

Question 15

Why does salt melt ice?

Accepted Answer

Salt melts ice because it lowers the freezing point of water. It makes the ice turn back into water, even if it’s cold outside!

Question 16

Why does dough rise with yeast?

Accepted Answer

Dough rises with yeast because yeast eats the sugar and makes bubbles of gas. These gas bubbles make the dough puff up like a balloon!

Question 17

Why do we refrigerate food?

Accepted Answer

We refrigerate food to keep it fresh longer. The cold slows down the growth of bacteria and mold that can make food go bad!

Question 18

What makes jelly jiggle?

Accepted Answer

Jelly jiggles because it's made of gelatin, which is like stretchy strings that hold water. When it sets, it’s wobbly and fun to eat!

Question 19

Why does water boil?

Accepted Answer

Water boils when it gets hot enough for bubbles of vapor to form. These bubbles push to the top, making the water jump and bubble!

Question 20

Why is honey sticky?

Accepted Answer

Honey is sticky because it’s full of sugar, which makes it thick and gooey. It’s like nature’s very sweet glue!

The Chemistry of Everyday Ingredients - 20 FAQs Explained Simply