Atoms
The building block of all matter
What is an atom?
Noble gases
What are the elements in group 8 called?
They are all unreactive gases
State the unique properties of noble gases
Different types of atoms not chemically bound
what is a mixture?
The electrostatic bonding between metals and non metal by the complete transfer of electron(s)
What is ionic bonding?
The positive particle found in the nucleus of an atom
What is a proton?
Periods
What are the rows in the periodic table called?
Halogens
What are elements in group 7 called?
salt in water
what is an example of physical change?
Sodium oxide
what is the name for Na2O?
The number of neutrons and protons in the nucleus.
What is the mass number?
Groups
What are the columns in the periodic table called?
As you move down the groups, the reactivity of metals increases
Describe the trend in the reactivity of metals as you move down the group
it creates chemical bounds between atoms
What is a chemical reaction?
positive charge
what is the charge of a proton?
Lithium, Sodium, Potassium, Rubidium, Caesium and Francium
Name the elements in group 1 or What are the elements in group 1?
By their similar properties and reactions
By number of electrons on the outer shell
How are elements arranged in their groups in the periodic table?
Alkali metals react violently with water to produce hydrogen gas, because they lose the electron in their outer shell easily
Explain a property of alkali metals
Neutralisation
what is the name of a reaction between a base and an acid?
the hydrogen ions do not dissociates easily.
how are the hydrogen ions of a weak acid?
Protons and neutrons are found in the nucleus, whilst the electrons are found in shells orbiting the nucleus.
Where are the atomic particles found in an atom?
Dmitri mendeleev
Who designed the first periodic table?
Pop sound
What is the test for Hydrogen gas
a double displacement
AB + CD ------> AD + CB
A compound.
what is the name of a substance made of two different types of atoms?