Mystery Science: Chemical Magic Review

Front

What is an acid?

Back

An acid is a substance that can donate a proton (H+) to another substance. Acids have a sour taste and can be found in many foods, like lemon juice.

Front

Are all acids dangerous?

Back

No, not all acids are dangerous. For example, lemon juice is an acid but is safe to consume.

Front

What is a chemical reaction?

Back

A chemical reaction is a process where substances (reactants) are transformed into new substances (products) through the breaking and forming of chemical bonds.

Front

What happens to matter during a chemical reaction?

Back

Matter is neither created nor destroyed during a chemical reaction; it is simply rearranged to form new substances.

Front

What state of matter has a definite shape and volume?

Back

Solid.

Front

What is the difference between a solid, liquid, and gas?

Back

Solids have a definite shape and volume, liquids have a definite volume but take the shape of their container, and gases have neither definite shape nor volume.

Front

Can you give an example of a safe acid?

Back

Lemon juice is an example of a safe acid.

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 base?

Back

A base is a substance that can accept protons or donate a pair of valence electrons. Bases often feel slippery and can taste bitter.

Front

What is an example of a common base?

Back

Baking soda is a common base.