Mystery Science: Chemical Reactions and Properties of Matter

Front

What is an acid?

Back

An acid is a substance that can donate a proton (H+) to another substance. Acids often taste sour and can be found in foods like vinegar and citrus fruits.

Front

Are all acids dangerous?

Back

No, all acids are not dangerous. Some acids are safe to eat and drink, like those found in food.

Front

What is a chemical reaction?

Back

A chemical reaction is a process where substances (reactants) change into new substances (products) with different properties.

Front

What happens when an acid reacts with a base?

Back

When an acid reacts with a base, they neutralize each other, often producing water and a salt.

Front

What is the pH scale?

Back

The pH scale measures how acidic or basic a substance is, ranging from 0 (very acidic) to 14 (very basic), with 7 being neutral.

Front

What is a property of matter?

Back

A property of matter is a characteristic that can be observed or measured, such as color, density, or boiling point.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances, such as rust forming on iron.

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition, like melting ice.

Front

What is an example of a common acid used in food?

Back

Vinegar is a common acid used in food, which gives a sour taste.

Front

What is the role of baking soda in identifying acids?

Back

Baking soda can react with acids to produce carbon dioxide gas, helping to identify the presence of an acid.