8Chem Diagnostic for Unit 5

Balance this reaction:

____ Na₃PO₄ + ____ KOH ---> ____ NaOH + ____ K₃PO₄

• 1,3,3,1

• 1,3,2,1

• 2,3,3,1

• 1,1,3,1

Balance this reaction:

____ RbNO₃ + ____ BeF₂ ----> ____ Be(NO₃)₂ + ____ RbF

• 1,1,1,1

• 1,2,1,1

• 2,1,1,2

• 2,1,2,1

Tags

NGSS.HS-PS1-1

Please choose all the pictures that show a chemical reaction.

• 
• 
• 
• 

What type of reaction is this?

• synthesis

• combustion

• replacement

• combustion

Which of these is a decomposition reaction?

• 
• 
• 
• 

What type of a reaction is this?

• synthesis

• decomposition

• replacement

• combustion

Which of these is a combustion reaction?

• 
• 
• 
• 

Tags

NGSS.HS-PS1-4

NGSS.HS-PS1-5

Which type of reaction is:

2 NaBr + Ca(OH)₂ → CaBr₂ + 2 NaOH

• Synthesis

• Single Displacement

• Double Replacement

• Combustion

The Law of Conservation of Matter states that the total mass of the reactants should be 

• More than the mass of the products
• Equal to the mass of the products
• Ignored during the reaction
• Less than the mass of the products

Tags

NGSS.HS-PS1-7

What is oxidation number of Fe in FeO ?

• +2
• -2
• 0
• +1