How well do you have knowledge about chemistry? How much you have prepared for your next examination? Well, first let's understand what is chemistry. Chemistry is the science of understanding how substances are made, how they behave, and how they can change. It helps us explain the world of matter, from tiny atoms to complex reactions, and how these impact our daily lives. Do you think you have covered all the topics of your class, and are well prepared for your exams, then take this chemistry quiz for grade 9 and review all that you have covered so far.
1. How many elements are there on the periodic table?
A. 120 elements
B. 108 elements
C. 180 elements
D. 150 elements
2. Which state of matter has a definite shape and volume?
A. Gas
B. Solid
C. Liquid
D. Plasma
3. What is the pH value of a neutral solution?
A. pH 5
B. pH 7
C. pH 9
D. pH 3
4. Which gas makes up the majority of Earth's atmosphere?
A. Oxygen
B. Nitrogen
C. Hydrogen
D. Carbon dioxide
5. Which subatomic particle carries a positive electric charge?
A. Ion
B. Electron
C. Proton
D. Neutron
6. What type of bond is formed when electrons are shared between atoms?
A. Ionic
B. Metallic
C. Covalent
D. Hydrogen
7. What is the process of a liquid changing into a gas at its boiling point?
A. Melting
B. Sublimation
C. Condensation
D. Vaporization
8. Which gas is used for respiration by both humans and animals?
A. Nitrogen
B. Oxygen
C. Hydrogen
D. Carbon dioxide
9. Which process involves the removal of salt from seawater to obtain freshwater?
A. Filtration
B. Distillation
C. Precipitation
D. Sublimation
10. What is the chemical formula for methane, a common natural gas?
A. N2
B. CH4
C. CO2
D. C2O
11. An Ionic compound is the result of the bonding of............?
A. Two metals
B. Five nonmetals
C. A metal and a nonmetal
D. Three distinctly similar metals
12. How many Valence electrons does an atom require to have a full shell?
A. Ten Valence electrons
B. Five Valence electrons
C. Eight Valence electrons
D. Seven Valence electrons
Drop your comment here...
