Chapter 11 Chemical Equations

The process by which one or more substances are changed into one or more different substances

• Chemical reaction 
• Physical reaction 
• Substance
• Law of Conservation of Mass

Tags

NGSS.HS-PS1-7

Involves the rearrangement and exchange of atoms to produce new molecules

• Balancing Equations
• Elements
• Reactions
• Activity series 

In any chemical reaction, the original substances are known as the ______ and the resulting substances are known as the ______

• reactants, solution 
• reactants, products
• products, reactants
• composition, reactant

Tags

NGSS.HS-PS1-7

Matter cannot be created or destroyed

• Law of Conservation of Mass
• Law of Conservation of Matter
• Science
• Chemical Law

Tags

NGSS.HS-PS1-7

Iron metal in Chlorine gas reacts to form solid iron(II) chlorine

• 3Pb + 2Cl₂ → ClFe
• 2Fe + 3Cl₂ → 2 FeCl₃
• Fe₂ + Cl → 2FeCl
• Cl₃ + 2Fe → Cl + 3Fe

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

NGSS.HS-PS1-7

Hydrogen peroxide decomposes to form water and oxygen gas

• 2H₂O → 2H₂O + O₂
• H₂O → O + 3H₂
• 3H₂O → OH₃
• H₂O → 3H₂O + O

Tags

NGSS.HS-PS1-7

What are the four driving forces of chemical reactions

• Formation of a liquid, formation of a solid, formation of heat, transfer of ions
• Formation of a gas, formation of water, formation of a solid, transfer of electrons 
• Formation of a solid, formation of water, formation of a substance, transfer of electrons 
• Formation of liquid, formation of water, formation of a gas, transfer of electrons

What are the indications of a chemical reaction 

• Evolution of energy as heat and light, production of gas, color change, formation of a precipitate 
• Evolution of energy, production of a liquid, color change, size change
• Heat and light, production of a gas, taste change, formation of awater
• Evolution of energy as heat and light, production of a gas, color change, formation of a solid

Tags

NGSS.MS-PS1-2

Potassium iodide + lead(II) nitrate → potassium nitrate + lead(II) iodide

• KI + 2Pb → NO₃
• 3KI + NOPb → 3KNO
• 2KI + Pb(NO₃)₂ → 2KNO₃ + PbI₂
• 2KI + 2PbNO₃ → 3KNO₂

A _____ is a substance that speeds up the reaction but is not used up in the reaction.

• Catalyst
• Product
• Reactant
• State of Matter