Fundamental Ideas Flashcards
What are elements?
One type of atom
How is the periodic table laid out?
So that elements with similar properties form columns
What is the atomic number?
The bottom number, which shows the number of protons/ electrons
What is the mass number?
The top number, which shows the number of protons and neutrons
How many electrons are in each shell?
2 in the inner shell, 8 in the outer shell
What are compounds?
Different elements chemically bonded together
What is ionic bonding?
Between a metal and non-metal, when one gains an electron and another loses one, to both gain full outer shells
What is covalent bonding?
Between non-metals when they share electrons. They’re joined together by covalent bonds
How is an atom arranged? (Protons, neutrons, electrons)
Protons and neutrons in the nucleus, electrons in the shells
