Atoms
Name the subatomic particles found in an atom.
Protons, neutrons, electrons
How many groups make up the Periodic Table?
18
What does the period number tell us?
The number of shells in an atom.
What are ionic compounds composed of?
A metal and and a non-metal.
What are metallic compounds composed of?
Only metal elements.
Which sub-atomic particles have a positive charge?
Protons
What is the element found in group 14, period 5?
Tin
What does the Atomic number tell us about an element?
The number of protons.
What is the term for a negatively charged atom?
Anion
True or False?
Metals of the property of being shiny.
True
Which sub-atomic particle has the smallest mass?
Electrons
True or False?
A property of non-metals is that they have the ability to conduct electricity.
False
What does the Mass number tell us?
The number of protons and neutrons.
True or False?
Ionic compounds have the property of being brittle.
True
Do metals form cations or anions?
Cations
How many electrons can the third electron shell hold?
18
Name the family of elements that are are highly reactive especially when they come into contact with oxygen.
Alkali metals.
How many neutrons are in a sodium atom?
12
Finish this equation:
Ba+2 + Cl-1 yields...
BaCl2
Why can metals conduct electricity?
There are electrons that can freely move.
What is an atom mostly made of?
Empty space
What is the group of elements that are oxidising agents?
Halogens.
What is the electron configuration of Silicon?
2, 8, 4
Finish this equation:
Fe3+ + O2- yields...
Fe2O3
Fill in the blanks:
Brass is an _________ and it is composed of __________ and ___________ .
Alloy, copper, zinc