Which of the
following combine and form different substances?
a) atoms
b) mass
c) energy
d) none
What hold together different atoms in a substance?
a) charge
b) bonds
c) ions
d) air
The forces of attraction between atoms are called…….
a) chemical bonds
b) chemical attractions
c) chemical reaction
d) all of these
Which of the following structure of an atom helps us to understand how atoms are held together in a substance?
a) dot and cross
b) electronic
c) Dalton’s model
d) line
Which of the following have no tendency to react?
a) alkali
b) halogens
c) metals
d) noble gases
Which of the following is complete only in noble gas atoms?
a) nucleus
b) inner shell
c) valence shell
d) all of these
