Chemistry riddles

Multiple Choice

I'm the smallest unit of an element that retains its chemical properties. What am I?

• Proton

• Cell

• Atom

• molecule

Multiple Choice

I am a state of matter whose particles have the strongest intermolecular forces. What state am I?

• Solid

• Gas

• Liquid

• Plasma

Multiple Choice

I am the process where a liquid turns into a gas at its surface, even below its boiling point. What process am I?

• Condensation

• Sublimation

• Evaporation

• Boiling

Multiple Choice

I am the number of protons in an atom. What am I?

• Mass number

• Proton number

• Atomic number

• Electron number

Multiple Choice

I am a substance that speeds up a chemical reaction without being consumed in the process. What am I?

• Reactant

• Catalyst

• Product

• Inhibitor

Multiple Choice

I am a type of bond where electrons are shared between atoms. What am I?

• Ionic bond

• Metallic bond

• Covalent bond

• Polar bond

Multiple Choice

I am a solution with a pH greater than 7. What am I?

• Acidic solution

• Alkaline/Basic solution

• Neutral solution

• Saline solution

Multiple Choice

I am a gas that makes up about 78% of Earth's atmosphere. What gas am I?

• Oxygen

• Nitrogen

• Carbon dioxide

• Hydrogen

Multiple Choice

I'm a mixture used in fireworks. If I'm heated, I can create a dazzling display of colors in the sky. My main ingredient

• Baking Soda

• Metallic Salts

• Vinegar

• Sugar

Multiple Choice

I'm part of a group of unreactive elements and are often found in bulbs. What group I belong to?

• Halogens

• Noble Gases

• Alkali Metals

• Transition Metals

Multiple Choice

I am the only metal that is liquid at room temperature. Often, I am used in thermometers. What am I?

• Mercury

• Gallium

• Sodium

• Tin

Multiple Choice

I am a substance that cannot be broken down into simpler substances by chemical means. What am I?

• Element

• Compound

• Mixture

• Solution