SPRINGS Chemical Reactions K Review 2019

What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__Na + __H₂O --> __NaOH + __H₂

• 2,2 --> 2,1

• 4,4 --> 4,1

• 1,2 --> 2,4

• 1,2 --> 2,1

What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__Al + __O₂--> __Al₂O₃

• 4,1 --> 2

• 4,3 --> 4

• 3,4 --> 1

• 4,3 --> 2

What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__H₂ + __S --> __H₂S

• 1,1 --> 1

• 2,2 --> 2

• 1,2 --> 1

• 1,2 --> 2

KBr

• Soluble

• Insoluble

Zinc Hydroxide

• Soluble 

• Insoluble

Silver Iodide

• Soluble 

• Insoluble 

What is the oxidation number of Fe in FeO?

• +1

• -1

• +2

• -2

Tags

NGSS.HS-PS1-2

Identify the reaction type:
C₂H₅OH(l) + O₂(g) --> CO₂(g) + H₂O_(g)

• Double displacement

• Synthesis

• Acid base

• Combustion

A chemical reaction that involves a gain/loss of electrons is called:

• Double Replacement

• Neutralization

• Oxidation-Reduction

• Hydrolysis

Tags

NGSS.HS-PS1-2

If in a reaction, copper is reduced; its number of electrons has:

• Increased

• Decreased

• Remained Constant

• Varies Randomly

Tags

NGSS.HS-PS1-2