Chemistry 2A

Chemistry 2A Revision Summary

HideShow resource information
What do the mass number and atomic number represent?
The mass number represents the total number of protons and neutrons and the atomic number is the number of protons.
1 of 8
Draw a table showing the relative masses of the three types of particle in an atom.
proton- mass of 1g neutron- mass of 1g and electron has a very small mass.
2 of 8
What is a compound?
Compounds are when two or more elements are chemically combined together.
3 of 8
Define the term isotope.
Isotopes are different atomic forms of the same element, which have the SAME number number of PROTONS but a DIFFERENT number of NEUTRONS.
4 of 8
Describe process of ionic bonding.
In ionic bonding, atoms lose or gain electrons to form charged particles (called ions) which are then strongly attracted to one another (because of the attraction of opposite charges, + and -). The atoms that perform ionic bonding want a full outer.
5 of 8
Describe the structure of a crystal of sodium chloride.
The structure is a regular lattice, meaning that the ions are closely packed together. They are very strong as they have strong forces of attraction. It is in a cuboid shape. Na+ and Cl- are held together.
6 of 8
List the main properties of an ionic compound.
They have high melting and boiling points due to strong attractions. They dissolve easily in water. When dissolved or heated, they carry electric current.
7 of 8
What type of ion do elements from the following groups from? a) Group 1 b) Group 7
aP
8 of 8

Other cards in this set

Card 2

Front

Draw a table showing the relative masses of the three types of particle in an atom.

Back

proton- mass of 1g neutron- mass of 1g and electron has a very small mass.

Card 3

Front

What is a compound?

Back

Preview of the front of card 3

Card 4

Front

Define the term isotope.

Back

Preview of the front of card 4

Card 5

Front

Describe process of ionic bonding.

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Chemistry resources:

See all Chemistry resources »See all Acids, bases and salts resources »