Advertisements
Advertisements
Question
Fill in the following blanks with suitable words :
In water, the proportion of oxygen and hydrogen is .............. by mass.
Advertisements
Solution
In water, the ratio of oxygen to hydrogen is 8:1 by mass.
APPEARS IN
RELATED QUESTIONS
WRITE SHORT ANSWER
Name three inert gases.
Define:- Atom
Write the names of `"Na"_3"PO"_4` compounds :
Define: Relative atomic mass
What is the maximum number of electrons present in:
1. first shell
2. second shell
3. third shell and
4. fourth shell
What does the word ‘atom’ mean?
Name the particle or particles you would expect to find in :
The orbit of an atom
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
What is the mass number of X?
State two observations which show that atom is not indivisible.
Give scientific reason.
All the mass of an atom is concentrated in the nucleus.
Compare:
Chlorine atom and chloride ion, with respect to
Atomic structure
Electrical state
Name the gas that.
Turns moist starch iodide paper blue black.
The basic unit of matter is ______.
Define – Atom.
An atom of an element has no electron. Will that atom have any mass or not? Can an atom exist without electron? If so then give example.
Define the following term with an example.
Non-metal
1 mole of Gold and Silver contain same number of atoms.
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
The smallest unit of an element is ______.
What is the fundamental particle of an element?
