Which one of the following always in a state of motion?
Molecules
Elements
Compounds
Mixtures
Which is a permanent change which cannot be reversed?
Chemical change
Physical change
Temporary change
Conversion of water to ice
A molecule can be further broken into still smaller units called:
mixtures
compounds
elements
atoms
In which of the following, the molecules are separated by large empty spaces?
solids
liquids
gases
kerosene
In which of the following, the molecules are less closely packed?
matters
When is a new substance formed?
chemical change
physical change
temporary change
conversion of water to ice
In which of the following, the molecules are very close to each other?
complexes
Atoms of different kinds combine and form:
Which of the following liquids cannot be dissolved in water?
Alcohol
Acid
Kerosene
Vinegar
Which one of the following has a definite volume, but no definite shape?
Liquid
Solid
Gas
Oxygen
