Periodic Table
What type of substances are listed in the periodic table in which there are over 100 of them
Elements
What name is given to the centre of the atom?
The nucleus
What colours do acids turn universal indicator?
red
What gas is tested by the pop test?
Hydrogen
What side of the periodic table do the metals feature, left or right?
left
Describe what a period is in the periodic table?
A period is a horizontal row
What is the atomic number equal to?
The number of protons. Accept also the number of electrons
What pH number is given for neutral solutions?
7
Name a metal that reacts quickly with water
lithium, sodium, potassium, rubidium, caesium or calcium
Does the periodic table contain more metal elements or non-metal elements?
metal elements
Describe what a group is in the periodic table?
A group is a vertical column
What is the mass number equal to?
The number of protons + neutrons
What elements are present in sodium hydroxide?
sodium, hydrogen and oxygen
Name a metal that reacts slowly with water but quickly with acid
Magnesium
Which metal is more reactive calcium or magnesium?
calcium
Name three Alkali metals
Any three for lithium, sodium, potassium, rubidium or caesium
How is the maximum number of electrons that the second and third electron shell can hold?
8 electrons
What elements are present in nitric acid?
Hydrogen, nitrogen and oxygen
What is missing from this general equation
metal + water --> metal _________ + hydrogen
hydroxide
When sodium reacts with water what colour will the water turn with universal indicator?
purple
Name 3 Noble gas elements?
Any three from helium, neon, argon, krypton or xenon
Aluminium has an atomic number of 13, what is its electron arrangement?
2,8,3
What element is present in all acids?
Hydrogen
What is missing from this general equation
metal + acid ---> _________ + hydrogen
salt
What happens to the reactivity of the alkali metals going down the group?
They become more reactive