REACTION PARTS
The starting substances in a chemical reaction.
What are reactants?
When one substance mixes evenly into another liquid.
What is dissolve?
Two or more substances mixed but not chemically combined.
What is mixture?
Materials people use that come directly from Earth.
What are natural resources?
To copy or repeat something exactly.
What is replicate?
A change like cutting paper or melting ice where no new substance forms.
What is a physical change?
The substances formed after a chemical reaction.
What are products?
The substance that gets dissolved.
What is solute?
A mixture where particles settle out over time.
What is suspension?
Materials made by humans rather than found naturally.
What is synthetic?
The smallest particles in matter are called these.
What are atoms?
A change that forms a completely new substance, like rusting iron.
What is a chemical change?
This scientific rule states matter cannot be created or destroyed.
What is The Law of Conservation of Mass?
The liquid that dissolves another substance.
What is solvent?
A mixture where particles stay evenly spread and do not settle.
What is a colloid?
Plastic, nylon, and polyester are examples of these.
What are synthetic materials?
Two or more atoms chemically bonded together.
What is a molecule?
This reaction absorbs heat and often feels cold.
What is an endothermic reaction?
A system where matter cannot enter or leave.
What is a closed system?
A mixture where one substance is completely dissolved in another.
What is solution?
A mixture where components are evenly distributed.
What is a homogeneous mixture?
Rubber and plastic are examples of this repeating-unit molecule.
What is a polymer?
A substance made of two or more different elements.
What is a compound?
This reaction releases heat or light energy.
What is an exothermic reaction?
A system where matter and energy can enter or leave.
What is an open system?
How much of a substance can dissolve in a liquid.
What is solubility?
A mixture where components are unevenly distributed.
What is a heterogeneous mixture?
Oil is used to make many synthetic plastics and materials.
What is a petroleum resource?
When matter changes state but not identity.
What is a physical change?
A reaction where a substance breaks apart into simpler substances.
What is decomposition?
A large molecule made from repeating smaller units, like plastics.
What is a polymer?
Temperature, stirring, and particle size affect this process.
What is the rate of dissolving?
Milk and fog are common examples of this type of mixture.
What is a colloid?
A resource that can be replaced naturally over time.
What is a renewable resource?
The rearrangement of atoms to form new substances.
What is a chemical reaction?
The speed at which a chemical reaction happens.
What is rate?