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WorksheetsMatter and Atomic Structure
Total questions: 11
Worksheet time: 6mins
which of the statements below is not true about molten lead?
molten lead consists of lead atoms only
lead atoms arranged in orderly manners
the size of lead particles in molten state is the same as in solid state
force of attraction between particles in molten lead is weaker compared to the force of attraction between particles in solid lead
water is made up of H2O molecules. which of the following reactions occurs when water is evaporated?
arrangement of H2O molecules is more ordered
distance between H2O molecules decreases
H2O molecules become heavier
energy content of H2O molecules increases
table beside shows the boiling and melting point of substances W, X, Y and Z. which of the following is a liquid at 100 degree celsius?
W
X
Y
Z
diagram beside shows the arrangement of particles in three states of matter at room temperature.
x - chlorine, y- naphthalene, z - oxygen
x - naphthalene, y - oxygen, z - chlorine
x - oxygen, y - chlorine, z - naphthalene
x - chlorine, y - oxygen, z - naphthalene
who discovered neutrons?
neils bohr
j.j thomson
james chadwick
which of the following is not a statement of dalton's atomic theory?
all matter consists of tiny particles known as atoms
atoms cannot be divided into simpler particles
atoms can be created or destroyed
atoms of the same element are the same but atoms for different elements are different
the electron arrangement of atom X is 2.8.7 and it has 15 neutrons in its nucleus. what is the nucleon number of atom X?
31
32
33
34
diagram besides shows the standard presentation of nitrogen atom. what is the number of valence electrons of the atom?
5
8
9
10
diagram beside shows the heating curve of solid acetamide. which statement can be deduced from the diagram?
no heat is absorbed at stage OP
acetamide undergoes physical changes at stage PQ
acetamide needs 8 minutes to melt completely
the attractive forces between particles of acetamide become stronger after Q
which statement is true about isotopes of an isotope? an isotopes is an atom of a given element with
same number of protons but different number of electrons
same number of neutrons but different number of protons
same number of protons but different number of neutrons
same number of electrons but different number of neutrons
elements P and Q are two isotopes. which of the following are the differences of elements P and Q?
number of protons
number of neutrons
physical properties
chemical properties
