Chemical Reactions and Chemical Equations

Which is the correctly balanced equaition?

• Cl₂ + 2NaI → 2NaCl + I₂

• Cl₂ + 2NaI → NaCl + 2I₂

• Cl₂ + NaI → NaCl + I₂

• 2Cl₂ + NaI → 2NaCl + I₂

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

Fill in the blank to balance the equation: P₄ + ........ Cl₂ ------> 4 PCl₃

• 2

• 4

• 6

• 12

Tags

NGSS.MS-PS1-5

Always starts with a hydrocarbon that reacts with oxygen and produces carbon dioxide and water. 

• Decomposition

• Synthesis

• Combustion

• Single Replacement

Tags

NGSS.MS-PS1-5

KOH + H₃PO₄ --> K₃PO₄ + H₂O

• Synthesis (combination)

• Decomposition

• Single replacement

• Double replacement

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

What are the products in the following chemical equation? 
2H₂ + O₂   -->   2H₂O

• H₂

• O₂

• 2H₂ + O₂

• 2H₂O

Tags

NGSS.MS-PS1-2

What is the left part of a chemical equation called?
H_{2 +} O → H₂O

• Reactants

• Products 

• Yields 

• Chemical Equation 

When balanced, the correct coefficients are:

• 2, 2, 2

• 2, 2, 3

• 3, 2, 2

• 1, 2, 3

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

the starting materials in a chemical reaction

• Products

• Reactants

• Starters

• Enders

a substance that is formed as the result of a chemical reaction

• Product 

• Reactant

• Starters

• Enders

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

Two Reactants and One Product

• Decomposition

• Synthesis

• Combustion

• Single Replacement