Grade 10 \ Name ………………………………………………
Homework - 1
Q1- Which particle has the smallest mass?
a) Proton
b) Neutron
c) Electron
d) Hydrogen
Q2 What determines the identity of an atom?
-
a) The number of neutrons
b) The number of protons
c) The number of electrons
d) The atomic mass
Q3- What are the two main categories into which
scientists sort elements based on physical properties?
a) Metals and alloys
b) Metals and nonmetals
c) Metals and gases
d) Nonmetals and insulators
Grade 10 \ Name ………………………………………………
Homework - 1
Metals are known for being good conductors of heat and
electricity. Which of the following materials is NOT typically
classified as a metal?
Q4-
A.Copper
Gold
Iron
Sulfur
Which of the following particles is NOT a subatomic particle
that makes up an atom?
Q5
A.Electron
Proton
Neutron
Molecule
Q6 Which of the following subatomic particles has a positive
charge?
A.Electron
Proton
Neutron
Nucleus
Grade 10 \ Name ………………………………………………
Homework - 1
Q7
The atomic number of an element is defined by the
number of ______ in its nucleus.
A.Proton
Neutron
Electron
Hydrogen
Q8- Evaluate the statement: 'Electrons are attracted to neutrons'. Is
this true or false? Provide justification for your answer.
Q9- Create a hypothetical element where the proton count is
equal to the electron count. How would this affect the element's
charge?
Q10- Analyze the relative charge of protons, neutrons, and
electrons. How does this difference in charge affect atomic
interactions?
Grade 10 \ Name ………………………………………………
Homework - 1
Q11- If a copper atom has 29 protons, how many neutrons would
it typically have if its mass number is 63?
Q12- Create a brief explanation of how the atomic number affects the
chemical behavior of an element.
Q13- Create a poster illustrating the concept of isotopes and include
examples of at least three elements with their respective isotopes.