Question 1

Which is NOT TRUE about the Laws of Conservation of Mass and Matter.

I. The mass of raw materials is not equal to the mass of the product.

II. There is a change in the type of elements before and after the reaction.

III. The mass and type of atoms of the reactant/s are not the same as the mass and type of atoms present in the product/s.

Accepted Answer

B. I and II

Answer

D. I, II, and III

Answer

C. II and III

Answer

A. I only

Question 2

2. the equation 2FeSO4(s) + Heat → Fe2O3(s) + SO2 (g)+ SO3(g)

Accepted Answer

D. the equation is balanced.

Answer

C. the mass of the product is greater.

Answer

A. there are more elements in the reactant sides.

Answer

B. there are more elements on the product side.

Question 3

3. Based on this unbalanced equationCaCO3à + CO2, what would be the other product?

Accepted Answer

D. CaO.

Answer

B. C

Answer

A. O2

Answer

C. CO

Question 4

4. What are the possible products when two aqueous ionic solution combine chemically?

I. Water

II. Gas

III. Aninsoluble solid

Accepted Answer

A. I only

Answer

B. II Only

Answer

D. I,iI,III

Answer

C. III only

Question 5

5. The products derived from combustion reactions are .?

Accepted Answer

A. CO2 + H2O

Answer

D. CO2 + O2

Answer

B.       C +  H2O

Answer

C. CO2 + H2

Question 6

6. Magnesium has an oxidationstate of +2 and oxygen has -2. What would be the product, if these ions are combined?

Accepted Answer

A.      MgO(s).

Answer

B. Mg3O(s).

Answer

D. Mg2O2(s).

Answer

C. MG3O2(s).

Question 7

7. What would NOT indicate that the chemical equation is balanced?

Accepted Answer

B. The atoms in the reactants are lesser in number compared to the products.

Answer

A. The type and numbers of atoms are the same on both reactants and product sides.

Answer

D. The sum of their masses is equal for both the reactants and products.

Answer

C. The type of atoms inthe reactants is always the same as the type of atomsinthe products.

Question 8

8. If the products of a double displacement reaction are AgCl(s) + NaNO3(aq), the reactants must be .

Accepted Answer

D. AgNO3(aq) + NaCl(s)

Answer

A. Ag4NO3(aq) + NaCl(s)

Answer

C. AgNO2 (aq)+ NaCl(s

Answer

B. Ag2NO3(aq) + NaCl(s).

Question 9

9. The other product for this equation2 HCl(aq) + Zn(s) → ZnCl2(aq) + is

Accepted Answer

A. H2(g).

Answer

B. Cl2(g).

Answer

D. H2O (g)

Answer

C. H2O (l).

Question 10

10. Predict the products of this equationMgCl2 + I2 →?

Accepted Answer

A. MgCl2(s) + I2 → MgI2 (s) + Cl2 (s

Answer

C. Both A and B

Answer

B. MgCl2(s) + I2 → MgCl2(s) + I(s)

Answer

D. No Reaction

Related quizzes

Related quizzes