Advertisements
Advertisements
Question
The smaller particles found in the atom is called ______.
Solution
he smaller particles found in the atom is called sub-atomic particels.
APPEARS IN
RELATED QUESTIONS
The average atomic mass of a sample of an element X is 16.2 u. What are the percentages of isotopes `""_8^16X" and """_8^18X` in the sample?
Tick the most appropriate answer.
Who discovered that radioactive rays are given out by uranium?
- Henri Becquerel
- Marie Curie
- Pierre Curie
- Schmidt
WRITE SHORT ANSWER
Name three inert gases.
ANSWER IN DETAIL
State the postulates of the Dalton’s atomic theory.
Define:- Atom
Define:- Radicals
Write the names of the elements present in the:-
Acetic acid
Define: Chemical bond
Give two examples for each of ionic and covalent bond.
Name the particle or particles you would expect to find in :
The orbit of an atom
An atom has 13 protons and 14 neutrons.
What is the atomic number of the atom ?
Fill in the blank
If an atom loses an electron, it acquires ______ a charge.
An atom of an element X may be written as `""_9^4"X"`
(a) What does the figure 9 indicate?
(b) What does the figure 4 indicate?
(c) What is the number of protons in atom X?
(d) What is the number of neutrons in atom X?
(e) What is the number of electrons in atom X?
(f) How many electrons are there in the outermost shell of an atom of element X?
(g) Write the symbol of ion formed by an atom of element X.
Find the mass of 2 moles of nitrogen atoms.
Electron, proton, neutron are the types of ______ in an atom.
Name the gas that.
Turns moist starch iodide paper blue black.
Select the correct answer to the statement given below:
Imaginary path around the nucleus of an atom in which electrons revolve.
Name the sub-atomic particles.
Project.
To have an idea of what atoms are, students can be asked to construct atoms using pipe cleaners (thin metal wires-electron shells), pompoms (balls-different colours for protons and neutrons) and beads (electrons). Students will love and enjoy putting them together and they look great hanging from the ceiling in the classroom.
______ is the smallest particle of an element.
Define the term ions or radicals.
Which of the following has maximum number of atoms?
Does the solubility of a substance change with temperature? Explain with the help of an example.
You are provided with a fine white coloured powder which is either sugar or salt. How would you identify it without tasting?
Atomic models have been improved over the years. Arrange the following atomic models in the order of their chronological order
- Rutherford’s atomic model
- Thomson’s atomic model
- Bohr’s atomic model
Write any two observations which support the fact that atoms are divisible.
The graphite refill used is pencil is made of element called ______.
Lead is also known as plumbum.