True or False: Boiling is the process where only surface particles of a liquid gain energy to become gas.

False. Boiling occurs when all particles in a liquid have enough energy to change into gas.

Fill in the blank: Different substances have different ___ points, which help to distinguish one substance from another.

Melting

I am a process that can happen at any temperature, transforming liquids into gases. What am I?

Evaporation

What are the materials called that transfer heat effectively?

Thermal conductors.

Fill in the blank: Metals are generally considered good conductors of heat, with ___ being the best conductor.

Silver

True or False: Non-metals like glass and plastic are excellent conductors of electricity.

False. Non-metals are generally poor conductors of electricity.

I can conduct electricity and heat, yet I am solid and shiny. What am I?

A metal

Fill in the blank: The substance that dissolves in a liquid is called the ___, while the liquid in which it dissolves is called the ___.

Solute; solvent

Riddle: I can change my form from solid to liquid and back again without altering my identity. What am I?

Water

Fill in the blank: Stirring increases the rate at which a solute, like ___, dissolves in a solvent.

Sugar

What are the substances that undergo a change in a chemical reaction called?

Reactants

___ are formed as a result of a chemical reaction.

Products

True or False: The production of a gas, such as when vinegar and bicarbonate of soda react, is evidence of a chemical reaction.

True

I am mixed to create something new, my transformation is what you pursue. What am I?

A chemical reactant