Fundamental Ideas Flashcards
What is the period is table?
A list of the elements
What is each element made of?
One type of atom
What are elements represented by?
Chemical symbols
What are the columns in the periodic table called?
Groups, the elements in a group have similar properties
What does a atom consist of?
A tiny nucleus surrounded by electrons
What are compounds p?
Two or more elements combined together
What does the nucleus contain?
Protons and neutrons
What are electrons?
My negatively charged particles that move around the nucleus
What is the charge of an atom?
No overall charge as the number of protons is the same as the number of electrons
What is the atomic number
Ethe number of protons
What is the mass number?
Total number of particles in the nucleus
Where is an electron in an atom?
In energy levels or shells
How are atoms arranged in the shells?
2,8,8
What does group number indicate?
Elements in the same group have the same number of electrons in their outer shell
Which group has a stable structure?
Group 8, noble gases
