Types of chemical reactions

molecule

A chemical combination of 2 or more nonmetals held together by covalent bonds

compound

Any amount of a chemical combination of 2 or more different atoms.

What else is produced when sodium carbonate decomposes? Na2CO3 → Na2O +

CO2

What else is produced during the combustion of butane, C4H10?

CO2 & H2O

chemical change

Chemical reaction; when substances interact with each other. Original substances are used up.

Which type of reaction has the general formula of AB + CD → AD + CB?

Double Displacement

Which type of reaction is NaCl + AgNO3 → NaNO3 + AgCl?

Double Displacement

bubbles

Gas given off during a chemical reaction; may or may not have an odour. Sign of a chemical reaction.

What else is produced during the combustion of propane, C3H8? C3H8 + 5O2 → 3CO2 + 4

H2O

What else is produced during the replacement reaction of silver nitrate and potassium sulfate? 2AgNO3 + K2SO4 → Ag2SO4 +

KNO3

What products should she record in the last row of the table?

LiCl + O2

What is produced during the replacement reaction of Ba(NO3)2 and Na2SO4?

NaNO3 + BaSO4

subscript

Number written after and BELOW an element in a chemical formula telling you how many of the preceding element are needed for that compound or molecule.

Which clue can be used to identify a chemical reaction as a combustion reaction?

Oxygen is a reactant.

precipitate

Solid compound produced from 2 liquids during a chemical reaction. Sign of a chemical reaction.

Which clue can be used to identify a chemical reaction as a decomposition reaction?

The reaction has a single reactant.

Which clue can be used to identify a chemical reaction as a replacement reaction?

The reaction has two reactants with ions that seem to switch places.

physical change

When a substance changes its phase (changes to a solid, liquid , gas, or plasma) or is modified (size, shape, etc) but remains the same substance.

chemical equation

Written representation of a chemical reaction/chemical change; shows all the reactants and products. Always in the form of: Reactants arrow Products.

oxygen

a colourless, odourless gas that is always involved in combustion (heating elements to produce new substances); it relights a glowing splint

carbon dioxide

a colourless, odourless gas that sinks in air; it puts a flame out; also a product of cell respiration; and a reactant in photosynthesis

chemical equation

a representation of a chemical reaction that uses symbols to show the relationship between the reactants and the products

word equation

a representation of a chemical reaction that uses words to show the relationship between the reactants and the products

What are the products of the combustion of a hydrocarbon?

carbon dioxide and water

A synthesis reaction will produce a single .

compound

signs of a chemical reaction

light, heat, bubbles, precipitate, color change, new substance exists

When Coach Kwan notices that a player is getting tired, she takes out the tired player and substitutes a fresh player. Which type of chemical reaction does this best model?

replacement

A chemical reaction that has the general formula of AB + C → CB + A is best classified as a__________ reaction.

single displacement

When explaining chemical reactions to a friend, Brianna models a reaction by taking several colors of modeling clay and making a sculpture of a horse. Which type of chemical reaction is Brianna most likely explaining?

synthesis

A product that is a chemically bonded combination of reactants will form in which type of reaction? Check all that apply.

synthesis polymerization oxidation

chemical reaction

the process by which one or more substances change to produce one or more different substances

products

things that are produced (on the right side of the equation)

reactants

things that react together (on the left side of the equation)