Is Matter Around Us Pure — Science STD 9 — Question

Fill in the following blanks:
60g of carbon element are ____________ moles of carbon atoms.

Fill in the following blanks:
A colloid is a _________ mixture and its components can be separated by the technique known as __________.

Fill in the blanks in the following statements:
An atom of an element has 11 protons, 11 electrons and 12 neutrons. The atomic mass of the atom is __________.

Complete the following statements:
Some boron atoms have mass number 10 and some have mass number 11. These boron atoms with different mass number are called ____________.

Fill in the blanks in the following statements:
The total number of protons and neutrons in the nucleus of an atom is called its __________.

Energy changes occur during ........... change.

Fill in the following blanks with suitable words:
The best evidence that the particles of matter are constantly moving comes from the studies of ________ and ________.

Fill in the following blanks with suitable words:
The particle which is formed by the loss or gain of electrons by an atom is called _________.

Fill in the following blanks:

Atomic number	Mass number	Protons	Neutrons	Electrons	Symbol
10	22	............	............	............	............

What is the chemical name of dry ice?