Fun Chemistry Facts for Kids

What is the smallest unit of matter?

• Electron

• Atom

• Quark

• Molecule

What do we call a substance made of two or more elements?

• Mixture

• Element

• Solution

• Compound

What is the chemical symbol for water?

• H2O

• H2O3

• O2H

• H2O2

What is the process called when a solid turns into a gas?

• Melting

• Condensation

• Evaporation

• Sublimation

What is the pH scale used to measure?

• The color of a solution.

• The acidity or alkalinity of a solution.

• The temperature of a solution.

• The density of a solution.

What is the name of the gas we breathe in?

• Oxygen

• Carbon Dioxide

• Nitrogen

• Hydrogen

What is the chemical formula for table salt?

• KCl

• MgCl2

• NaCl

• CaCl2

What do we call a reaction that absorbs heat?

• Endothermic reaction

• Catalytic reaction

• Photochemical reaction

• Exothermic reaction

What is the main gas found in the Earth's atmosphere?

• Carbon Dioxide

• Oxygen

• Helium

• Nitrogen

What is the term for a mixture that has a uniform composition?

• Heterogeneous mixture

• Homogeneous mixture

• Solution

• Compound