chemical reaction

A substance produced during a chemical reaction

• Product

• Reactant

• Properties

In the reaction of hydrogen with black copper oxide.

copper oxide.

a oxidation process takes place

c. oxidation and reduction

b. reduction

d. no correct answer

• a

• b

• c

• d

Double substitution reactions are classified into:

a. reaction between acid and alkali.

b. reaction between acid and salt.

c. reaction between salt and another salt.

d. all the previous answers.

• A

• B

• C

• D

The oxidizing factor is the substance which

a. gives oxygen only.

b. takes hydrogen only.

c. gains electron(s) only.

d. (a). (b) and (c).

• A

• B

• C

• D

During the reaction of sodium with chlorine, chlorine atom is reduced as it

------------ an electron and changes into negative ION

Predict the products for the this Single Replacement reaction:

K + HCl →

• KCl + H₂

• KHCl

• KH + Cl₂

• HCl + K₂

Predict the products for the this Double Replacement reaction:

AgNO₃ + KCl →

• AgCl + KNO₃

• AgK + ClNO₃

• KAg + NO₃Cl

• AgCl + 3 KNO

Predict the products for the this Single Replacement reaction: (Copper has a charge of 1+)

Mg + CuCl →

• MgCl₂ + Cu

• Mg + Cu

• MgCu + Cl₂

• MgCl + Cu₂

Predict the products of this single replacement reaction: Na + H₂O →

• NaO + H₂

• NaOH + H₂

• NaH + O₂

• ONaH

What type of reaction occurs between an element and a compound?

Zn + 2HCl --> ZnCl₂ + H₂

• Synthesis

• Decomposition

• Single Replacement

• Double Replacement