Atom is made up of the following except
.......... method of science deals with asking of intelligent questions
Any substance that has mass and volume is known as
The introduction into the environment of a substance that has harmful or poisonous effects is
Which of the following can be compressed?
.......... branch of chemistry deals with the study of natural products from plants and animals
. What is the mass number of an element with 6 protons and 6 neutrons
The change of gas to solid is called
Scientifically acceptable general principle formulated to explain a phenomenon based on experimental evidence is called
The change of solid to gas is
The origin of chemistry can be traced to the study of
The father of chemistry is
............... has helped to increase food production
One of the following is not the reason for studying chemistry
Which of the following matter is a gas?
The symbol of Hydrogen is
Evaporation occurs at any temperature while boiling occurs at
Scientists that go to the space are called
The father of chemistry is
