Atoms of the same kind combine and form:
solids
elements
liquids
compounds
Which is a permanent change which cannot be reversed?
Chemical change
Physical change
Temporary change
Conversion of water to ice
Heating or cooling brings about changes in:
atom
molecules
matter
Which one of the following always in a state of motion?
Molecules
Elements
Compounds
Mixtures
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 less closely packed?
gases
matters
In which of the following, the molecules are separated by large empty spaces?
kerosene
What do fish and other animals that live in water breathe?
Oxygen
Hydrogen
Carbondioxide
Nitrogen
In which of the following, the molecules are very close to each other?
complexes
Anything that occupies space and has weight is called:
Non-metal
Metal
State
Matter
