Chemistry 1st secondary

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Chemistry Fundamentals Quiz

Test your knowledge in chemistry with this engaging multiple-choice quiz designed for 1st secondary students. Challenge yourself with 20 carefully crafted questions covering various topics such as chemical reactions, molecular formulas, and more!

Topics included:

Atomic Structure
Stoichiometry
Molar Mass Calculations
Chemical Reactions
Nanoparticles and Their Properties

20 Questions5 MinutesCreated by LearningAtom42

Use when you need ( N= 14 , H = 1 , O = 16 , C = 12 , S = 32 , Mg = 24 , Al = 27 , Ca = 40 , Fe = 56 , Na = 23 ) The limiting substance and remaining when 5 grams of CH4 with 14 grams of H2O in the following reaction : H2O + CH4 --> 3H2 + CO

Limited is H2O and remaining = 9 grams

Limited is CH4 and remaining = 8.37 grams

Limited is CH4 and remaining = 9 grams

Limited is H2O and remaining = 8.37

The percentage of yield for a reaction between 20 grams of sodium chloride solution with an excess amount of silver nitrate , if 45 grams of AgCl is precipitated from this reaction. ( Cl = 35.5 , Ag = 108 )

20%

37.71%

91.74%

15%

The empirical formula of the compound which contains 25.92% of nitrogen and 74.07% of oxygen is :

N2O5

N3O2

NO2

The coefficient after balancing this equation : Iron + Hydrochloric acid —> Iron II Chloride + Hydrogen

1 , 2 , 1 , 1

1 , 1 , 1 , 2

2 , 1 , 2 , 1

2 , 2 , 1 , 1

Acid is formed from 40% of Carbon , 6.67% of Hydrogen and 53.33% of Oxygen and it’s molar mass is 60 g/mol . The empirical and molecular formulas of this acid :

CHO

CH2O

CH3O

CH2

When 14 grams of CO gas react with an excess amount of oxygen , the volume of produced CO2 at STP is : ..... L

22.4

44.8

11.2

89.6

Element X2 react with Y2 to produce X2Y3 , the coefficient is :

2 , 3 , 1/2

1/2 , 2 , 3

2 , 3/2 , 3

2 , 3 , 2

All of the following are three - dimensional Nano substances , except :

Nano shell

Bucky ball

Thin films

Carbon nano tube

Which of these statements about nanoparticles is correct ?

They have large volume to surface areas ratios.

They have large surface area to volume ratios.

They have small surface area to volume ratios.

They have constant surface area to volume ratios.

Which of the following is used to determine the volume of body which doesn’t dissolve in water ?

Burette

Pipette

Graduated cylinder

Beakers

The molecular formula of a hydrocarbon compound whose molecular mass is 58 grams. Knowing that a sample of it consists of 48 grams of carbon and 10 grams of hydrogen.

C2H2

C4H8

C4H6

C2H6

The number of sodium ions produced from dissolving 117 grams of sodium chloride in water :

8.23 X 10*23

8.24 X 10*24

12.04 X 10*24

4.84 X 10*23

What is the coefficient needed to correctly balance the following equation ? Fe + O2 —> Fe3O4

1 , 4 , 4 , 1

3 , 2 , 1

4 , 2 , 3 , 1

No correct answer

Chemistry 1st secondary

Chemistry Fundamentals Quiz

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