Free Printable GENERAL CHEMISTRY 1 Q3 SUMMATIVE TEST 1

1.

Mixtures are either homogeneous or heterogeneous. Homogeneous mixtures have a uniform composition. Heterogeneous mixtures have components which are different from one another. All of these mixtures are heterogeneous EXCEPT

a)

A. Bagoong isda (ginamos)

b)

B. Muddy water

c)

C. Newly-milled rice

d)

D. Salt solution

2.

Based on the properties of the components of a sodium chloride solution, which separating method is most applicable?

a)

A. Chromatography

b)

B. Decantation

c)

C. Distillation

d)

D. Filtration

3.

Which of the following represents a pure compound?

a)

b)

c)

d)

4.

Which chemical substance has the chemical formula $NaHCO_3$ ?

a)

A. Baking soda

b)

B. Dry ice

c)

C. Ozone

d)

D. Yeast

5.

What is the basis for separating mixtures through chromatography?

a)

A. The substances’ ability to form gas

b)

B. A. The substances’ abilities to pass through fine pores

c)

C. A. The substances’ abilities to be attracted to magnets

d)

D. A. The substances’ different abilities to adhere to the surface of solids

6.

Which of the following is the correct sequence of steps to separate a mixture of salt and sand?

I. Filter the sand with a filter paper. Set aside.

II. Add water to the salt and sand mixture to dissolve the salt.

III. Pure water is condensed and collected in the receiving flask.

IV. In the distillation apparatus, boil the remaining salt solution to vaporize the water.

V. After water has been boiled away, pure salt remains.

a)

A. II, I, III, IV, V

b)

B. II, III, IV, V, I

c)

C. II, V, III, I, IV

d)

C. II, I, IV, III, V

7.

Which of the following is correctly matched?

a)

A. Protium

b)

B. Deuterium

c)

C. Tritium

d)

D. All of the above

8.

Based on the following molecular model, which of the following is shown?

a)

A. $H_2$

b)

B. $H_2O_2$

c)

C. $H_2O$

d)

D. $CH_4$

9.

The structural formula for ethane is given by then following figure. What is the empirical formula of ethane?

a)

A. $CH_4$

b)

B. $C_2H_4$

c)

C. $C_2H_6$

d)

D. $C_6H_2$

10.

What is the chemical name of KCl?

a)

A. Potassium chlorine

b)

B. Potassium chloride

c)

C. Potassium monochloride

d)

D. Potassium chloroform

11.

What is the chemical name of $Cu\left(NO_3\right)_2$ ?

a)

A. Cuprous nitrate

b)

B. Copper (I) nitrate

c)

C. Cupric nitrate

d)

D. Copper (III) nitrate

12.

What is the chemical formula for aluminum phosphate?

a)

A. $Al_3PO_4$

b)

B. $Al_4PO_3$

c)

C. $AlPO_3$

d)

D. $AlPO_4$

13.

The ions comprising potassium nitrate are

a)

A. $K^+$ and $NO$

b)

B. $K^-$ and $NO_3^+$

c)

C. $K^+$ and $NO_3^-$

d)

D. $K^-$ and $NO_3^2+$

14.

Which of the following rules apply in naming molecular compounds?

a)

A. Name the metal and then combine it with the name of the anion.

b)

B. A. If the element has several oxidation states, indicate the charge number right after the cation in the compound using Roman numerals enclosed in parenthesis.

c)

C. A. Use prefixes for both elements in the compound to indicate the number of atom for each element present in the compound.

d)

D. A. The charge of the cation will become the subscript of the anion, while the charge of the anion will become the subscript of the cation.

15.

Determine the empirical formula of a compound that contains percentages of 682/25 Carbon and 1818/25 Oxygen.

a)

A. $CO_2$

b)

B. $C_2O_4$

c)

C. $CO$

d)

D. $CO_4$

16.

What is the molecular formula of a compound with an empirical formula of $CH_2O$ and a molar mass of 180.16 g/mol?

a)

A. $C_3H_6O_3$

b)

B. $C_6H_{12}O_6$

c)

C. $C_3H_6O_3$

d)

D. $CH_3O$

17.

Which of the following is the correct sequence of stoichiometric coefficients for the reaction

$MgO+HBr\ \rightarrow\ MgBr_2\ +H_2O$ ?

a)

A. 1,1,1,1

b)

B. 1,2,1,1

c)

C. 1,1,2,1

d)

D. 2,2,2,2

18.

Which of the following is the correct sequence of stoichiometric coefficients for the decomposition of hydrogen peroxide into water and molecular oxygen?

a)

A. 2,2,1

b)

B. 2,2,2

c)

C. 1,1,2

d)

D. 1,2,1

19.

Suppliers of use methane as raw material according to the equation

$CH_4+2O_2\ \rightarrow\ CO_2\ +2H_2O$

Using the above equation, answer the following questions given that 2.25 moles of $CH_4$ is used (Atomic Mass: C=12 amu, O = 16.01 amu). How many grams of $CO_2$ will be produced?

a)

A. 0.39 g

b)

B. 225 g

c)

C. 45 g

d)

D. 99 g

20.

Suppliers of use methane as raw material according to the equation

$CH_4+2O_2\ \rightarrow\ CO_2\ +2H_2O$

Using the above equation, answer the following questions given that 2.25 moles of $CH_4$ is used (Atomic Mass: C=12 amu, O = 16.01 amu). How many moles of water will be produced?

a)

A. 2.5 mol

b)

B. 4.5 mol

c)

C. 5.0 mol

d)

D. 9.9 mol

GENERAL CHEMISTRY 1 Q3 SUMMATIVE TEST 1

Total questions: 20

Worksheet time: 13mins

Similar Resources on Wayground