Introduction to Chemistry - SS1 Chemistry Past Questions and Answers - page 1
What is chemistry?
The study of living organisms
The study of matter and its properties
The study of celestial bodies
Why is chemistry important?
It helps us understand the universe and its origins
It enables us to develop new medicines and treatments
It allows us to understand and control chemical reactions
All of the above
Which of the following is NOT a branch of chemistry?
Biology
Physical chemistry
Analytical Chemistry
Organic chemistry
What is the basic unit of matter?
Atom
Cell
Element
Molecule
Which of the following is an example of a chemical change?
Melting ice
Cutting paper
Boiling water
Burning wood
What is the chemical symbol for oxygen?
O
H
AU
C
What is the pH scale used to measure?
Temperature
Acidity or alkalinity
Density
Pressure
Which subatomic particle has a positive charge?
Proton
Neutron
Electron
Ion
What is the chemical formula for water?
H2O2
CO2
H2O
CH4
What is the process of combining elements to form new substances called?
Sublimation
Condensation
Combustion
Chemical reaction